Wombat in the Wild

 is the 17 book in the Animal Ark book series, written by Lucy Daniels, which was first released in 1996.

Summary
Mandy is spending six months in Australia - a dream come true. The owner of a farm has to find new homes for all her animals, including a 13-year-old wombat, Batty. Batty has a mind of his own, however, and nobody is likely to give him a new home so Mandy attempts to teach him to live in the wild.