A New Kind of Super Spy — Elizabeth Lenhard

When their parents go on a spy mission to Brazil, Carmen and Juni are assigned two baby-sitters from the OSS. But these aren't ordinary baby-sitters -- one has sprouted whiskers, and the other has grown a set of tentacles! These are spies on the prowl. Has the OSS set a trap for the family, or is someone secretly sending animal agents into the ranks? It's a wild hunt to track down these wacky spies. Now Carmen and Juni are on their own to solve the case!