PHOTOS: 20 Adorable Pets Wearing Halloween Costumes

Halloween is the one day of the year when people everywhere can dress up and be whoever or whatever they want. But why should only humans have all the fun?

The following pets are killing it in their Halloween costumes, dressed as everything from pumpkins to recording artists to other animals.

The best part? Only a small fraction of them look miserable about it!

The Lion Lab

The 'Hello Kitty' Kitty

SpongeBob BarkPants

Starbucks Pug

Chiweenie-Shark

Uni-dog

Spider-Horse

Bun-kin

Rooster-Witch

Superpup

Spidey-Dog

Guinea-Devil

Barkman and Robin

Madonna Chihuahua

Martini Dog

Birdy-Bee

Mariachi Chihuahua

Michael Jack-dog

Pig-cess Bride

Boxer Boxer