Minecraft Dungeons:Fox

The Fox is a passive mob that appeared briefly in the Minecraft Dungeons Cross-Platform Play Trailer. It is a regular variant of the already existing Arctic Fox pet that is available with the Creeping Winter DLC or with the Hero Pass. They also make an appearance in the spin-off game Minecraft Dungeons Arcade as a summonable pet.

Trivia

 * Just like the silverfish and cat, it only appears in trailers, never getting added in the game itself.
 * However, unlike the silverfish, the fox has no files relating to it in the game whatsoever.
 * In the Minecraft Dungeons Arcade game however, it can be obtained as a pet.