A Skunk was a present the Ice King got for Jake in the episode "Holly Jolly Secrets Part I." Ice King was giving it as a present since he wanted to watch the secret tapes Finn and Jake were watching, not knowing they were his tapes, along with the fact that he thinks of them at friends at times. At the end of "Holly Jolly Secrets Part II," Ice King gave Jake the Skunk as his present in return for Finn and Jake giving back his secret tapes. Character designer Andy Ristaino says the skunk might have wandered off, which is why it doesn't appear anymore.
The skunk appears like an ordinary skunk, except it has a red bow wrapped around its neck with a green ribbon. It has blue eyes and a pink nose. Its stripe is shaped like an oval. Its tail appears to be as big as its body.