Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How to Tell if a Dog Will Be Aggressive Towards Cats? 8 Vet-Reviewed Signs to Look For

cat and dog nose to nose outdoors

Cats and dogs are often portrayed as mortal enemies in pop culture, but in reality, they can be completely disinterested in one another or even become good friends. The outcome of an interaction between a cat and a dog depends on the situation as well as the personality of the two animals.

Also, if you’re not too familiar with dog behavior and body language, it can be tricky to determine if a dog is being happy and excited or aroused and aggressive. However, dogs consistently show the same kinds of behaviors when they’re aggressive. So, if you see a dog displaying several of the following behaviors, make sure to create a safe amount of distance between the dog and the cat.

divider 3 paws

The 8 Signs to Tell if a Dog Will Be Aggressive Towards Cats

1. Stiff & Still

dog sniffing a cat
Photo Credit: vvvita, Shutterstock

Dogs can suddenly become silent and still, if they feel something threatening within their comfort zone. They’ll suddenly stop what they’re doing and try to pick up cues to determine if they’re in danger.

This is one of the first signs that a dog may become aggressive towards a cat. However, stillness can also indicate interest and focus, so it doesn’t necessarily lead to an aggressive charge.


2. Intense Stare

Photo Credit: BORINA OLGA, Shutterstock

After a dog identifies the presence and location of the cat, it can stare it down intensely. If your dog is very still and doesn’t break eye contact with the cat, there’s a good chance that it’ll act aggressively.

It may also track the movements of the cat and ignore anything else in its vicinity, including you. Both intense staring and showing the whites of its eyes are often precursors to a bite.


3. Tail Up

dog tail up
Photo Credit: Bert De Schepper, Pixabay

Both dogs and cats also communicate with their tails, and the meaning of the same tail movements are different from each other.

For example, happy cats will have upright tails, and annoyed cats will wag their tails. Dogs, on the other hand, will wag their tails when they’re happy or excited. If they’re feeling aggressive, their tails will be high up and vertical. When a dog raises its tail, it can also be releasing more of its scent to mark its territory.

Keep in mind that a dog that’s feeling aggressive can also wag its tail really fast while it’s vertical.


4. Baring Teeth

dog barink teeth, angry dog, dog teeth
Image Credit: Bokeh Blur Background

It can feel like a dog baring its teeth is sending mixed signals because it can be both a sign of friendliness and submissiveness as well as aggression and resource guarding. So, if a dog is baring its teeth at a cat, make sure to look for other signs of aggression to determine if this action is reflecting aggression.


5. Growling

territorial dog growling
Image Credit: Agnes Kantaruk, Shutterstock

Dogs can growl when they’re feeling playful and excited, and they can also growl when they’re angry. When a dog is growling due to a perceived threat, it’s sending a warning that it’s ready to act aggressively if the threat doesn’t back down.

It’s best to remove your dog from a situation if it’s growling because it’s indicating some sort of strong arousal. There’s only a slim chance that a cat will want to play with a large dog that’s growling out of excitement.


6. Ears Pinned Back

Image Credit: Tom Harper Photography, Shutterstock

A dog will pin its ears back to its head when it’s feeling uncomfortable. Dogs that are frightened or stressed will usually pin their ears back. This energy can quickly revert to aggression if the dog doesn’t see the other animal backing down.


7. Attack Posture

Angry dog barking at something or someone
Image Credit: alexei_tm, Shutterstock

Dogs assume a certain posture when they’re getting ready to lunge and attack. They will try to make themselves look bigger by elevating their head. They’ll also shift their weight forward and stiffen their legs to increase the size of their appearance. They may give one final warning snap before deciding to lunge.


8. Creating Distance

aggressive dog
Image Credit: zoosnow, Pixabay

Dog aggression doesn’t always look like an aroused dog that’s ready to lunge. Some dogs may display fear aggression by trying to create more space between themselves and cats. It’ll try to run away, but if the cat continues to pursue it, it may resort to nipping or biting to keep the cat at bay.

divider 3 paws

Why Dogs Become Aggressive Towards Cats

There are several reasons why dogs can act aggressively towards cats.

Prey Drive

Some dog breeds have a strong prey drive, so they naturally want to catch any animals that aren’t dogs. Dogs in the Hound, Terrier, Sporting, and Herding groups tend to have some of the strongest prey drives.


Fear-Based Aggression

Some dogs may simply be afraid of cats because they aren’t sure of what they are and if they’re safe. If this is the case, you can try to introduce the two animals to each other from distances where they both feel safe. Then, you can slowly decrease the amount of space over time until the animals are comfortable being in close proximity to each other.


Territorial Behavior

Some dogs can be more territorial than others. This characteristic can be both positive and negative. For example, guard dogs need a sense of protectiveness in order to do their jobs well. However, highly territorial dogs can be dangerous to unfamiliar guests in the home and other dogs and animals.

Dogs with strong levels of territorial aggression must be trained in order to avoid any accidents. Obedience training is key, and it’s best to work with a professional dog trainer or behaviorist to establish a strong line of communication with your dog.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

divider 3 paws

Conclusion

Understanding a dog’s body language can help you predict if it’ll act aggressively or playfully. You can watch for multiple signs to determine your dog’s intentions. However, it’s better to be safe than sorry.

So, if you notice your dog being extremely focused on a cat or getting really excited, make sure to create enough distance between the two animals to help your dog return to a calm state. This will prevent accidents and also prevent the two animals from creating any negative associations with one other.


Featured Image Credit: Okeanas, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

5 Cat-Safe Bouquets: Cat-Friendly Flower Arrangements (With Images)

Flower bouquets and flower arrangements are among the most popular gifts since they are affordable and look and smell beautiful. Receiving flowers will...

Why Do Cats Like Warm Things So Much? 6 Vet-Reviewed Reasons

You may have seen your cat cuddling with things like air vents or heaters. This may pique your interest, causing you to wonder...

How To Keep Flies Away From Cat Food: 4 Vet-Reviewed Tips & FAQ

High-quality wet food is tasty, high in moisture, and rich in protein, but it does come with one major drawback—flies. Wet cat food...

Why Does My Cat Clean Herself on Me? 4 Vet-Verified Reasons & When to Worry

Cats have quite a few strange behaviors. Even if you have been living with cats forever, you may still be surprised by their...

More related

Ragdoll Kittens for Sale in Arkansas: 2025 Breeder List

Excited Cats advocates for adopting before shopping, though we fully understand there are many reasons for seeking a breeder. So, we encourage it...

CatGenie Litter Box vs. Litter-Robot: 2025 Comparison

Scooping poop and emptying the litter box is so last year! Our homes are more connected than ever before, so it makes sense...

How to Dispose of Cat Litter Without Plastic Bags: 6 Vet-Verified Tips & Tricks

As cat parents, we are constantly looking for ways to improve the litter experience in our homes. Litter boxes can be one of...

Can Cats Eat Pork Rinds? Vet-Reviewed Facts & FAQ

If you frequently eat pork rinds either as a snack or as part of a meal, you’ve probably experienced your cat wanting some....

Keep reading

Can Cats Eat Chia Seeds? Vet-Approved Nutrition Facts & FAQ

Chia seeds are most associated with those tasty chia puddings that you see all over social media. Maybe you haven’t thought about giving them to your fur baby, but some cat parents wonder if their pet might benefit from a...

Can Cats Eat Chia Seeds

Can Cats Eat Chives? Vet-Reviewed Facts & FAQ

Chives are pretty common in our human food. However, they are not suitable for our furry friends. Chives are toxic to cats and other similar seasonings like garlic, leeks, and onions. Chives belong to the Allium family, which is poisonous...

Can Cats Eat Chives

Is Baby Food the Secret to Homemade Cat Food? Read This First

You love your cat like they’re family (because they are). But there might be times when you’ve run out of your cat’s kibble and only have some (human) baby food in the cupboard. Or maybe you want to make homemade...

jars of baby food

Caring for Pets While Serving in the Military: 10 Vet-Approved Tips

The pet owners among the 2.13 million active military personnel all face the same problem when they serve: how to care for their animal companions1. These individuals are heroes worthy of our thanks and praise, and we understand how gut-wrenching...

ginger cat looking at the window

How Long Does a Cat Take to Recover From Jaundice? Our Vet Answers

While a highlighter-yellow cat may sound like something out of a cartoon, the reality of a jaundiced cat is no laughing matter. If your feline is suffering from this serious condition, you may have many questions, including how long it...

closeup of cat with jaundice

Can Cats Eat Canned Salmon? Vet-Reviewed Facts & FAQ

Cats are notorious for their love of fish, so feeding them a bit of canned salmon should be a no-brainer. What could be safer than that, right? As it turns out, while serving your cat canned salmon likely won’t kill...

Can Cats Eat Canned Salmon

Are Tortoiseshell Cats Hypoallergenic? Vet-Approved Facts & FAQ

Between 10% and 20% of people globally are allergic to cats. If you suffer from cat allergy but can’t resist the charm of Tortoiseshell cats, you might wonder whether they are hypoallergenic. Unfortunately, no. Tortoiseshell cats are not hypoallergenic and...

a tortoiseshell cat sitting on a wood

How to Tell If My Cat has a Fever: 10 Vet-Reviewed Signs

For us, it’s easy to tell if we have a fever by feeling our foreheads or using a thermometer. Unfortunately, it’s not as simple as a pet parent when you think your cat is sick and might have a fever....

man holding himalayan cat