Zoe's Rescue Zoo: The Silky Seal Pup by Amelia Cobb - old paperback
When Great-Uncle Horace brings back lost and homeless animals from his travels, it falls to Zoe and her mum, the zoo vet, to settle them into their new home. This suits Zoe perfectly, because she can talk to animals! But that's a secret! A sad little seal pup arrives at the zoo, but how can Zoe welcome him if the zoo might be closing down?