Donkey
A donkey was an Earth mammal and a member of the horse family.

The Guardian of Forever showed a scene depicting Humans riding camels and donkeys in a Egyptian plateu to the crew of the USS Enterprise in 2267. (TOS: "The City on the Edge of Forever")

Nick Bottom, a character from William Shakespeare's play A Midsummer Night's Dream, was known for having his head turned into that of a donkey by the fairy . Bottom's transformation was depicted in the painting Titania, Bottom and the Fairies, which was found in Captain Picard's edition of The Globe Illustrated Shakespeare: The Complete Works. () 

The holographic Giuseppina Pentangeli claimed that The Doctor was "lagging behind like a tired donkey" during their performance of the duet "O, soave fanciulla" in 2373. ()

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fr:Âne
 Earth animals