* Santa's Little Helper: A mixed-breed dog who is a member of the Simpson family. He is not technically Bart's dog, but Bart often takes care of him and considers him a friend.
* Snowball V: A cat who was killed by Santa's Little Helper.
* Snowball IV: A cat who was accidentally killed by Maggie.
* Snowball III: A cat who was accidentally killed by Santa's Little Helper.
* Snowball II: A cat who was killed by Bart.
* Snowball: A cat who was killed by Bart.
While these are Bart's pets, he does not have a specific pet dog that is his own.