Is it a good thing to let your engine idle in cold temperatures? People often start their vehicles during winter months to let them warm up, but is this actually helpful or harmful? A study from 2009 revealed that people in America believed you should leave your car to idle for about four minutes in sub-zero temperatures. But, former drag racer, Stephen Ciatti, has other ideas and advice for drivers. Let’s start this off by saying that he’s definitely qualified to give an opinion on the matter with his Ph.D. in mechanical engineering.
He says that this is harmful, but only if your model is from decades ago. Ciatti says that if you idle your vehicle in the cold, you could actually be doing the opposite to your engine and shortening its lifespan. Older cars may have experienced an issue with these temperatures, but luckily, newer designs are much better!
Since the 1980s, car companies have been aware of this issue and have replaced carburetors with electronic fuel injection that uses sensors to calculate what is needed in your engine. Your engine already adjusts to the temperatures so by leaving your car idling, it is impacted by more gasoline fuel than it needs, which can have a damaging effect.
Did you know that when your engine reaches 40 degrees, it will revert to the original fuel mixture that it uses? Another important note to remember is that idling your car isn’t going to help it reach this point faster. What is Ciatti’s closing piece of advice? He says that the best way to warm up your engine is to drive it! So, get the keys, and your engine will reach normal temperatures in five to fifteen minutes.
While the following breeds have the potential to be gentle and loyal to their owners, they can also display dangerous acts of aggression if they are abused, neglected or not trained properly.
The Xolo is also known as the Mexican Hairless dog, and can be standard, miniature, or toy-sized. The breed ranges from 10 to 55 pounds. It is of course known for it’s unique trait of hairlessness. It’s temperament is sensitive and they are very cautious with strangers, which makes them one of the more unfriendly breeds.
Originally from South Africa, the Boer Boel actually appears to have leg muscles that resemble some of the big cats it shares the same country with. Also known as the South African Mastiff, this dog breed is owned by many to act as a guard for their home. Although they are very loyal to their owners, they are also extremely dangerous due to their territorial instincts. They are particularly good at not just tracking down intruders, but also keeping them down.
There are a number of dogs on this list that are more than capable of taking down their owners and the American Bandogge is certainly one of them. Due to this breed’s incredible strength and huge muscles, American Bandogge’s were eventually bred to fight. Seeing that they are a mix between a Neapolitan Mastiff and an American Pit Bull Terrier, it comes as no surprise that this breed is considered to be extremely dangerous, as well as a useful guard dog.
While the Gull Dong is extremely loyal to their owner, don’t expect them to behave respectfully to anyone else! This cross between a Bully Kutta and a Gull Terrier is extremely dependent on their beloved owner and if they are left to their own device for just a few minutes, all hell can break loose! Originally bred as a fighting dog, the Gull Dong can be extremely aggressive, especially to humans who they are not familiar with. So watch out!
While this might be one of the visually cuter breeds of dogs on this list, it doesn’t make them any less dangerous. Originating from the southern regions of Africa, the Rhodesian Ridgeback have been bred in the past to help owners protect their farms and fields from fierce predators such as lions. Make no mistake about it – even though this dog doesn’t take too much work to be domesticated, owners do need to give them a healthy social life.
There is no denying that the Basenji is a difficult dog to teach classic tricks such as sitting and fetching. This dog, which was originally bred to hunt, is infamous for being either shy around strangers or just flat-out aggressive. The Basenji is originally from Central America. While it might not be the most dangerous dog breed on this list, it is regarded by numerous experts to be the second hardest dog to train out of all of them!
Certainly one of the biggest dogs on this list, Saint Bernards also have the potential to be very dangerous. During its best days, a Saint Bernard can be extremely friendly and sweet – a perfect dog for any family. However, if they are not trained properly from an early age, the consequences can be catastrophic. Originally bred to be a rescue dog, this large hound can cause a lot of damage purely because of its size. Weighing between 65 and 120kg, they are big!
When you are bred to be a hunting dog for many generations, it is very difficult for an owner to eliminate your inherent dangerous streak. Another dog on this list that poses a threat to humans purely because of its size, they don’t call them Great Danes for no reason whatsoever. Not only does it hold the record as the world’s tallest dog, but it is also believed to be the ninth most dangerous dog breed on the planet. They were originally bred in Germany to hunt wild boar.
The fact that it is illegal in numerous places around the world to own one of these is a testament to how dangerous this dog can be. The Fila Brasileiro is not necessarily interested in attacking prey. However, this dog, which is also known as the Brazilian Mastiff, has been trained to protect owners from intruders and is an expert at tracking down strangers. Moreover, the Fila is also very good at holding down intruders while waiting for their owner to arrive.
It seems like American Bulldogs share a very similar trait with humans and it’s one of the things that can make them dangerous. Just like their owners, this dog breed is often very friendly. However, due to their exuberance and confidence, American bulldogs are prone to becoming arrogant and this also breeds stubbornness. These dogs, which were originally bred to hold down cattle in farms, will often react negatively to an owner if they are not being treated well.
Cane Corsos are primarily known for being the last Mastiff that is still used in the activity of coursing. Weighing between 99 and 150 pounds, this dog is a huge threat to game animals and it also helps that they have been bred to fight. Amazingly, this dog has a loose connection to a specific period in history. Apparently, the Ancient Romans also used to use the Cane Corso’s ancestors, the Canis Pugnax, in warfare as they were useful at defending soldiers while on the battlefield.
The following dog shares a similar trait to huskies in that they do struggle at times to socialize with both strangers and smaller animals. The Alaskan Malamute heavily depends on a lot of exercise in order to stay fairly content. Otherwise, there is a strong chance that this dog will get bored and as a result, it will start to misbehave a lot. Due to their desire to be independent, the Malamute can be difficult to train and its size, ranging from 70-100lbs, can be challenging too.
There is no denying that German shepherds are synonymous with loyalty. Trained to be vicious fighters and defenders of the top forces, they are a useful asset to have by one’s side. However, if this dog is unfamiliar with you, it’s best to look the other way. With that said, the German Shepherd is believed to be extremely intelligent and they are a part of many K-9 units in a variety of police forces. These dogs should be trained to know how to protect their owners in a safe way.
Many assume that all Pitbulls are inherently dangerous and are inclined to be violent. However, there is so much more to them than what meets the eye. There are a wide variety of Pitbulls and each of them has their own unique quirks and behavioral traits. Many of them though were originally bred for dogfighting, as well as for baiting bears and bulls. Although they are also generally considered to be the most dangerous dogs in America, many owners have warm, peaceful relationships with their Pitbulls.
While many people own Dogo Argentinos and have never had issues while being alone in their company, this fierce breed has a devastating bite and is one of the strongest dogs around. Often bred to hunt game, this dog has the potential to kill a wide variety of animals, such as pumas and wild boars. They are often extremely protective of their owners. However, due to a number of tragic cases, it is illegal to own a Dogo Argentino in some countries including the United Kingdom.
If one is planning on owning a Caucasian Ovcharka, it is imperative to train this particular dog to the book. This is because this dog naturally doesn’t like strangers and other humans and needs to be conditioned not to succumb to this instinct. Originally bred to protect livestock, the Caucasian Ovcharka is believed to be courageous and assertive. If not trained properly, this dog will struggle to accept others, it may demonstrate aggressive behavior towards others and it could be too late to change.
Contrary to what you might think, Rottweilers are actually fairly benevolent towards humans. Nevertheless, the wrong owner can bring out the worst in these powerful dogs. With an inherent instinct to guard its owner, there is so much more to Rottweilers than just the stigma they carry. Usually, a variety of abuse, neglect and poor training can pave the way for aggressive and dangerous behavior from this particular breed. Tender love and care will most likely have the reverse effect.
Even boxers can be extremely friendly dogs. However, by the time it reaches a certain size, this fierce dog can often undermine its owner, with devastating outcomes. Anyone who has grown up with a boxer in their lives knows that they can be pretty passive. With that said, there have been a number of incidents involving this dog breed – specifically, 48 from 1982 all the way up to 2012. This originally German breed can reach between 50 and 70lbs and they are often headstrong, energetic and playful in equal measures.
Russian Black Terrier
Back in the 1940s and ’50s, the military bred Russian Black Terriers in order to assist soldiers in sniffing out enemies during war. Moreover, they were also good at guarding soldiers, often showcasing their loud bark. Fast forward many decades later, and the Russian Black Terrier is a popular pet. With that said though, there is no denying that this dog requires a lot of training in order to make them a worthy addition to the family.
This might be one of the most surprising additions to this list. How could the beautiful black-dotted star of 101 Dalmatians be considered one of the most dangerous dog breeds in the world? With that said, there is a good reason why they can be threatening to those around them. Not only do they have a muscular body, but Dalmatians also have a lot of endurance, meaning that they can engage in confrontations for long periods of time. Cruella had her reasons!
Those large wrinkles are unmistakably synonymous with Shar Peis. This dog breed, which is generally a gentle giant under the right owner, can reach serious levels of aggression if handled the wrong way. Originally bred in China, a Shar Pei’s original purpose was to act as a guard dog. These days though, the dog is a popular pet. Interestingly, the name Shar-Pei is actually Cantonese for “sandy skin,” alluding to the breed’s rough coat and the texture of it.
While usually gentle, especially with children, Bull Mastiffs can become aggressive for various reasons depending on how they’re raised. If they’re socialized at a young age, they get along with other animals rather than treating them as prey. While puppies may not be able to differentiate between intruders and friends, older mastiffs are known to be watchful and can tell a person’s motives, causing them to take charge and attack. They’re naturally protective and if trained to be watchdogs, they’ll rush to corner an intruder.
Kangals are naturally territorial dogs so while they may be calm around children, they’re extremely protective of their owners and tend to be aggressive towards other male dogs. Kangals are a little more detached from strangers until they get to know them, of course. However, they usually don’t pose a threat to people unless they’re given a reason to attack. Although they’re gentle and can be trusted around homes, it’s important to note that they shouldn’t be confined to small spaces because they’ll become destructive.
Collies, a type of herding dog, rarely get aggressive but if they do, it’s for good reason. What’s good about Collies is that when they do become aggressive, they give warning signs beforehand, which makes it a lot easier to get to the root of the dog’s aggression. Smart and active, they’re not the type of breed that should be locked inside the house because they will use all their energy to destroy everything. Because of their strong herding instincts, they may start herding running children because to them, the children are the same as young sheep.
A relatively rare breed, Pharaoh Hounds are known for their athleticism and intelligence. With a muscular build and stubborn nature, it’s important to reign these hounds in to instill obedience and prevent overly aggressive behavior. While this kind of breed does make for a perfectly fine house pet, they’re popularly owned as hunting companions and require a good amount of exercise so they don’t adopt negative behaviors. For example, they are known to become unruly if they haven’t been adequately socialized at a young age.
Staffordshire Bull Terrier
While known for their friendly demeanor and loyal disposition, the Staffordshire Bull Terrier has been involved in attacks and was originally bred to bait bulls. Described as fearless and intelligent, this breed is not likely to back down from a fight. They’re naturally muscular but although they appear intimidating, they’re not usually aggressive toward humans but rather enamored with them. Of course, members of this breed can differ in temperament and without consistency, it’s difficult for people to tell which ones are actually friendly so it’s best to be cautious around this kind of pup.
The Czechoslovakian Vlcak, originally bred in 1955, is a mix between a German Shepherd and a Carpathian wolf. With that being said, it doesn’t come as a shock to learn that this kind of dog can exhibit aggressive behavior in some cases. It’s crucial that these dogs are socialized properly to reduce the risk of significant danger considering that they’re, ya know, part wolf. Although they are loyal to their owners, they also require strong leadership in order to inspire obedience.
Often mistaken for a small German shepherd, the Belgian Malinois is highly intelligent and energetic, which is why they need an active owner who will give them proper training. Otherwise, prepare for some misbehavioral issues including digging, biting, or herding. Although they make for ideal guard and police dogs, they can also show aggressive behavior, especially towards small children and other animals. With that being said, if they’re socialized at an early age, Malinois are known to be very accepting.
Vizslas, a dog breed originating from Hungary, are highly energetic and affectionate with those around them. They’re ideal guard dogs and may bark at any strangers they feel are invading the ‘pack’ space. They’re natural hunters with an excellent ability to be trained. Still, it’s important they be trained gently without harsh commands or strong physical correction as they have sensitive temperaments that could be easily damaged if trained too harshly. If socialized at an early age, they should have no issues with children.
Chihuahuas may be known as one of the smallest dogs in the world but they’re definitely mighty…and yappy. Chihuahuas can be described as loyal and devoted to their owners — sometimes to the point of jealousy in which they may bite or snip at someone that’s getting a little too close to their owner. They’re usually a very temperamental breed and aren’t necessarily known as child-friendly. Because they don’t like strangers, they bark often and can be good as an alert-style watch-dog.
The dachshund, also known as the Weiner dog, can range in size from eight to thirty-two pounds. You’re probably wondering how on Earth a Weiner dog can be considered aggressive. It turns out that this breed of dog is susceptible to “small dog syndrome.” This means that it tries to compensate for its small size with a large attitude, leading to different behavioral issues. If Dachshunds are socialized at an early age, they do well with children although they don’t really do well with too much rough play.
Jack Russell Terrier
Described as fearless and independent, it’s almost surprising that Jack Russells are such small-sized dogs, ranging from 14 to 18 pounds. They’re usually white in color with black or beige markings. This breed’s origin began in England in which they were primarily used to hunt foxes. They have also been used to hunt groundhogs and badgers. With that being said, they’re very energetic. Beyond that, though, they’re also stubborn dogs that have little patience and aren’t very tolerant with children.
Labrador Retrievers are easily the most popular dog breed known to man if we’re being honest here. Anyone and everyone who owns a Labrador will claim that they’re gentle and loveable. While they’re not aggressive by nature, they’re highly energetic and need an outlet to release all their pent up energy. In other words, they’ll become highly destructive of your belongings if you lock them in the house. They’re a gentle and patient breed but it’s important not to leave them alone with small children as they’re extremely active and clumsy.
Don’t let their size fool you — a Pekingese is one courageous and bold breed. Be wary, though, because that could switch to aggression pretty quickly, especially towards other dogs whether in the household or around the neighborhood. With this being said, it’s crucial that a Pekingese receive early socialization. It’s also important to note that this kind of breed needs a strong and firm hand to control and prevent negative behavior such as growling, snapping, excessive barking, or biting.
While they’re popular family pets to have, cocker spaniels are known to be aggressive. This behavior is often misdiagnosed as ‘Cocker Rage’ or ‘Sudden Onset Aggression,’ though if it’s going to manifest itself, it’ll happen before the cocker becomes an adult, often around eight months old. This is why it’s important to socialize them at an early age to avoid aggressive behavior including biting, growling, or snapping. And with all of this being said, even the most aggressive of dogs can usually learn gentle ways if trained properly…
There is no denying that the bull terrier has a unique facial appearance due to its oval-shaped head. This is a bi-product of many generations of crossbreeding and they are believed to have the leanest muscle tissue of pretty much any dog. Despite their intimidating appearance, the bull terrier isn’t actually the most dangerous dog breed on this list. With that being said, they have no problem attacking smaller animals and this often spells doom for whoever they are chasing down.
A dog with incredible senses might let these get the better of them, and the Doberman Pinscher is a classic example of this. This is because they are generally trained to take down intruders and they are some of the best guard dogs in the world. This is in no small part due to their loyalty, intelligence and ability to stay alert at all times. Originally bred in Germany, the Doberman Pinscher can weigh between 65 and 90lbs and they often demonstrate aggressive behavior towards strangers.
Like many dangerous dog breeds on this list, the Chow Chow is undeniably cute when it is still a puppy. It can also retain much of that cuteness as they mature. However, many owners of Chow Chows would beg to differ. It is believed that these dogs require a high level of attention and physical activity in order to minimalize their aggressive behavior. This breed, which is originally from China, is also referred to as a Songshi Quan, which literally translates into “puffy-lion dog.”
Arguably the fluffiest dog on this list, it is hard to imagine that the Bedlington Terrier could be anything other than gentle and friendly. However, despite the fact that it has the fur reminiscent of a small sheep, this dog actually has a reputation that bypassers might not be fully aware of. The Bedlington Terrier has been described as a “versatile dog being good with children and fit to kill any other dog of his weight,” which is extremely worrying.
Understandably, some of the most dangerous dogs can also be ideal protectors. The Akita Inu is a perfect example due to its friendly disposition. However, these dogs may act aggressively towards any new dogs you choose to bring home. Originally from the mountains of Japan, there are two breeds associated with the Akita. There is the Akita Inu of Japan and the American Akita. Their independence, strength and dominant nature are a dangerous cocktail if they are mistreated.
Seeing that they are between 24.5 and 32 inches tall when standing, the Tosa Inu is a dog breed that can often be quite intimidating to be around. Originally bred to be a fighting dog, the Tosa can trace its origins back to Japan and is also referred to as a Japanese Mastiff. Ownership of this towering dog is limited or banned completely in a variety of countries. These include the likes of Australia, Fiji, Denmark, Ireland, and the U.K., to name a few.
Plenty of people own huskies and generally speaking, they are able to train them to be well-behaved pets. However, it’s not always that simple. Originally bred in the Arctic regions to pull sleds, this dog requires a lot of discipline and exercise in order to stay on an even keel. Seeing that huskies have a huge predatory instinct, it is advised to keep them away from smaller animals. If they are bored, huskies can get into all sorts of trouble.
Perro de Presa Canario
With a name that is Spanish for “Canarian catch dog,” the Canario was originally bred to work livestock. Due to their potential to be dangerous, these dogs require intense obedience training and a chance to socialize from an early age.
While this might not be the most surprising addition to this list, the wolf hybrid has plenty of reasons to be here. At the end of the day, when you cross a wild beast with a cute domesticated pet, then it is going to be challenging to keep this dog on an even keel. Usually, these hybrids are the combination of a grey wolf and a dog. Due to the many genetic traits they possess, their behavior can often be very unpredictable.
It should come as no surprise that the national dog of South Korea can be just as ferocious as it is cute and cuddly. People all over the world own these beautiful dogs and they are popular due to their gentle behavior and loyal ways. With that said though, the Korean Jindo also has the potential to display serious acts of aggression. If owners don’t take care of them properly, Jindos can become dominant over those who surround them and cause plenty of destruction.
We know — how can a dog with this kind of face ever be dangerous? Well, they’re not threatening per se. In fact, they’re social and loyal to their families. With that being said, they have a strong protective instinct and will protect their owners from any and all threats. They’re highly intelligent and energetic creatures, meaning that they need a healthy outlet for their energy. Aussies get bored quite easily and may decide to keep themselves busy by chewing on things, digging, or barking. They’re even known to become aggressive if they don’t have something to challenge them mentally.