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7 Aggressive Small Dog Breeds You Don’t Want to Mess With

The Geeky Gecko presents: aggressive small dog breeds you don’t want to mess with!

Dogs are cute, wonderful, playful, and fluffy, and they can make our lives better. However, even if they love their owners a lot, there are times when a dog can attack their human parents.

Most people imagine large breeds like Pit Bulls, German Shepherds, Rottweilers, etc. when they think about dog bite injuries. Due to their large size and power, when these strong dogs feel threatened, they might attack people and cause severe injuries or even fatalities.

However, don’t be surprised if you see these aggressive small dog breeds get angry and try to bite you. They can threaten people on the streets who seem suspicious, attack strangers when they approach their owners or visit them at home, or even try to bite their owners in case they don’t like something.

While cases of pups attacking their humans are rare, it doesn’t mean that they don’t or didn’t happen. If you want to know which are the most aggressive small dog breeds you don’t want to mess with, keep reading!

bark, aggresive small dog breeds
Photo by Lesia Kapinosova from

1. Chihuahua

We start off this list of aggressive small dog breeds with a tiny guy you were probably expecting: Chihuahua. While they’re small and cute, they can get very feisty.

They’re very attached to their owners, and when they sense that they or their favorite human is in danger, they won’t shy away from biting you. Chihuahuas are protective pups and will attack anything that gets in their way, including people, other pups, or cats.

If you have a Chihuahua at home and you’d like to avoid a disaster, make sure you take them to proper training sessions, take them on multiple walks in the park so they can socialize with other dogs and with people too, and treat them with care and attention because they’re very delicate.

2. Cocker Spaniel

Popular throughout the world, the Cocker Spaniel is known for its alertness, intelligence, and willingness to please. If you’re unfamiliar with this pup or have just recently gotten your canine friend, you should know that these lovely furry friends are part of the aggressive small dog breeds.

These pups are very cute and friendly in general, and the reason they might get aggressive is because they’re not socialized with other pooches or with people, and they don’t know how to behave.

Another reason they might have suspicious behavior is because they’ve not been used to something for long enough. This could be caused by being bored, being afraid of someone or something, or being left alone in the home.

As we’ve previously said, you can easily deal with this type of bad behavior with the help of professional training sessions, taking them out in parks to socialize, and spending time together with them.

3. Pekingese

The third aggressive small dog breed we’ll talk about in today’s article is the Pekingese. This breed is known for its agility, obedience, and also for being a great watchdog.

They get along well with both humans and other animals, and with the proper training sessions and love from their families, they can be fantastic companions.

Pekingese pups were originally bred for hunting, and they roamed in groups. They’re a hybrid between a white brier and a tan. They’re very loyal to their families, and in case they feel threatened by something, they won’t shy away from galloping up to 10 miles per hour to chase away anybody.

If you want a Pekingese in your family, take your time playing with them and introducing them to the family, because they need to socialize so they can be the friendliest pups ever.

aggressive small dog breeds
Photo by Gertrude Goene from

4. Lhasa Apso

Lhasa Apso is another aggressive small dog breed that can bite when feeling threatened or uneasy, and experts believe that this behavior might be linked to the dog’s early history as a hunting companion. When this tiny and cute pooch is in the wild, it tends to chase any kind of prey that is there.

If you notice that your pup is always on the lookout, it might be because it senses a danger approaching, or it could just be bored and looking for anything to do. The Lhasa Apso is an aggressive small dog breed, and your pup is more likely to attack if it perceives that its target or possible prey is really near them.

Don’t be discouraged by this aggressive small dog breed, because they’re amazing companions, but they need to know the difference between something new and something that can pose a real danger. With the proper training and time spent with you, they’ll learn more about how to become friendly dogs.

Keep reading to discover other aggressive small dog breeds you don’t want to mess with!

5. Papillon

We continue our list of aggressive small dog breeds by talking a bit about Papillon, which is a cute but strong pup. While they weren’t meant to be fighters, they can be vicious when necessary.

Papillon is one of the oldest dog breeds in the world, and it doesn’t show any sign of aggressive behavior (without a reason), but they can be very protective of their owner.

They can be quite unpredictable, so you’ll need a lot of patience to deal with this tiny one. Some recommend getting them neutered so they can be calmer, but you should always talk to your veterinarian before making any decisions.

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Photo by Sopon charoensuk from

6. Beagle

As cute and playful as beagles are, they’re also part of the aggressive small dog breeds. These small pooches are energetic and love to have fun with their favorite humans. If you’re an active person who likes to go on many walks throughout the day or enjoys playing, this pup might be for you.

These pups require plenty of love and attention from their owners because they can sometimes have bad behaviors, so they start barking and eventually attack when they feel threatened.

Due to their strong sense of territoriality, beagles might have the impression that their whole yard is theirs, so be careful with them because they can be quite stubborn if you don’t teach them how to follow your commands.

Because these playful animals are known for having strong predatory impulses, it’s crucial to teach them not to bite. As we’ve previously said, although they can be quite stubborn, they’re smart, energetic, and ready to receive all your love.

7. Miniature Bull Terrier

Many people know that one of the most aggressive small dog breeds is the miniature bull terrier. These cute pups will bite and eat everything in their way.

If you’re looking for a pup that will protect your family no matter what, you should know this one won’t be a great fit, but it makes wonderful companions.

Get ready to play a lot with this intelligent and very energetic pup, and don’t forget to have a ton of patience during training because they won’t shy away from causing trouble.

These dogs tend to get upset if they have no idea what to do, so biting training should be started as soon as possible. When your bull terrier is ready for play, you can tell by closely observing the cues they give you, including sniffing, circling, or shifting around. Take them to proper training sessions, and they will become your besties in no time!

If you want to have fun with your pup and teach them some commands, I recommend you check out this amazing and interactive toy! Do you know any other aggressive small dog breeds? Leave them in the comments and let us know what you think about this article.

If you liked reading this article and you’d love to check out something else from The Geeky Gecko, check this post out: 6 Inexpensive and Cute Dog Breeds for Those Who Are on a Budget

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