Trump is an animal liaison officer at Pet Vet clinic. (He’s a Jack Russell terrier.) This is book 6 in the Pet Vet series.
When Dr Jeanie (the vet) checks on a mother labrador and her 15 newborn puppies, she discovers that the mother dog isn’t able to look after the smallest puppy, Tiny. Trump and Dr Jeanie have to try to find a foster-mother for Tiny, and keep an eye on him.
Before you get into the story, there are some sketches of the important people in the book. Throughout the book there are grey info boxes to help with interesting words (like ‘Runt—the smallest pup or piglet in a litter.’)
If you like books about animals (and especially dogs!), you’ll love The Pup’s Tale.