There your dog goes again, chasing after another critter in your backyard. While their favorite little animals might be squirrels, your dog doesn't discriminate. If they see a bunny, raccoon, possum or anything else — they chase. Why does your dog chase squirrels and other furry critters?
So far, the behavior hasn't caused much of a problem, but you're worried that the chasing may lead to your dog getting loose and then lost — or worse, getting bitten by the other animal. If you've been pondering why your dog like to chase squirrels, this guide will explain why the behavior occurs and whether or not you can make it stop.
Why Do Dogs Chase Squirrels?
There are many reasons why your dog may chase little creatures, like raccoons, porcupines, skunks and chipmunks, but the most common are curiosity, playfulness and predatory drive.
Curiosity or Playfulness

A young puppy, for example, may be intrigued by fast moving critters and chase after them to find out what they're doing, or to join in and "play" with them. This natural curiosity is wonderful, but it's important to keep a close eye on your pet while outdoors. You don't want them to wander away while chasing a prey, and you wouldn't want them to be bitten by a small animal either!
Predatory Drive
If not for curiosity, why do dogs chase squirrels? While some dogs may just want to play with a squirrel, there are others who see a critter as their prey, and their predatory drive kicks in. Dogs who are predatory chasers are attempting to catch their prey — and eat or extinguish it. You'll want to make sure a dog with a predatory drive is also watched afterward so that they don't run far away (and so you don't get "greeted" regularly with a mouthful of squirrel).
On the other hand, there's no need for concern if your dog doesn't seem interested in chasing squirrels or other small animals. They simply may not have the impulse. However, if your dog was once extremely driven to chase prey, yet suddenly shows no interest, it may be a smart idea to check in with their veterinarian. Any sudden changes in behavior may be indicative that something is wrong.
Which Breeds Are the Biggest Chasers?
According to the American Kennel Club (AKC), sighthounds of all sizes, such as Afghan hounds and Whippets, were bred to chase. Other breeds, specifically herding dogs such as border collies and German shepherds, are also inherently prone to chasing, due to their drive to corral animals.

But that doesn't mean a different breed can't also be driven to chase. Any dog who sees a small animal darting around their territory may show interest. That interest can potentially develop into a "game" or a prey-driven chase!