I and many others that have completed the second Kid's room Quest "Word Up" Will have noticed that when spelling the word "ass" it was not included in the 24? I do not see why a donkey does not get included, as it is a name for a donkey. This word should be included in the quest.
http://en.wikipedia.org/wiki/Donkey
"The donkey or ass, Equus africanus asinus,[1][2] is a domesticated member of the Equidae or horse family. The wild ancestor of the donkey is the African Wild Ass, E. africanus. In the western United States, a small donkey is sometimes called a burro (from the Spanish word for the animal)."