Ana and Marcos have been given a marvelous present: An adorable couple of guinea pigs called Cookie and Fluffy. The two little creatures love being stroked and they make funny little noises when they're happy. Accompany the children in the adventure of discovering, caring for and respecting these lovely little animals. As well as the amusing story about Cookie and Fluffy, the book contains activities to do together with your parents and a useful guide with advice from the vet so that your guinea pigs will always be healthy and happy.