Hippo in a Hole

 is a book in the Animal Ark book series, written by Lucy Daniels, which was first released in a unknown date.

Summary
A violent storm causes chaos at the lodge where Mandy and James are staying. When they go outside the resort to check on the damage, they find a mother hippo in distress, standing guard over her trapped calf.

The wardens' attempts to rescue the baby hippo fail when their jeep gets stuck in the mud. But if they don't free the baby soon, he and his mother will die. Can Mandy help the hippos?