Piglet in a Playpen

 is the eigth book in the Animal Ark book series, written by Lucy Daniels, which was first released in 1994.

Summary
Mr. Gill's farm is having money troubles, and he tells his son, Brandon, that they can't afford to keep a runt piglet named Ruby. Can Mandy and James help Brandon secretly raise Ruby into a strong healthy pig, and also find help for the farm?