Guinea Pig in the Garage (Animal Ark #20)

Mandy Hope loves animals more than anything else. She knows quite a lot about them too; both her parents are vets and Mandy helps out in their surgery, Animal Ark.\nWhen Mandy asks Rachel Farmer to look after a neighbor's guinea-pig, she's thrilled! If her parents see how good she is with it, maybe they'll let her have one of her own. But then Rachel loses one of the guinea-pig's babies - now she'll never be allowed to have a pet!\nCan Mandy and James help her find the missing animal?