The bubble goat is a character that appears in the episode "Who R Zoo?"
It is a goat in the form of a bubble with a shiny transparent glow to it. It has a tail, two horns on its head, no pupils, two nostrils, and a tail.
Role in episode
The bubble goat first appears when SpongeBob and Patrick blow it as one of their many animals for the Bubble Zoo. As it comes to life, it eats Patrick's pants.
Later in the episode, it and the other bubble zoo animals destroy the zoo and break out of their cages after being unintentionally provoked by Squidward. They then go on to attack Bikini Bottom. Prior to this, it also eats Squidward's farmer's uniform, further illustrating its obsession with eating clothing.