Tracey Corderoy

When a lonely little boy receives an invitation to play written on a paper boat, he is sure that he has finally found the friend he's been longing for, but Bear isn't quite the playmate the boy had imagined.

"Bob has decided to be a pet-sitter. He can't wait for all the cute hamsters and bunnies to arrive! But look out! Here come three noisy goats, one very grumpy bear, and-yikes!-is that a troll at the door? It's fairy tale chaos!"--Goodreads.