Minecraft Dungeons:Jellie Cat

Cats are passive mobs that appeared in the Minecraft Dungeons Cross-Platform Play Trailer where two of them are seen near Dani, with one on her seat behind her and one beside her, and a third seen by the fish tank looking at the fish.

Trivia

 * Just like the silverfish and fox, it only appears in trailers, never getting added in the game itself.
 * Like the silverfish and fox, it has no files relating to it in the game whatsoever.