Doctor Witch's Animal Hospital Book

My son loved this book, to the extent that he told one of his preschool teachers that it was his favorite book. Right now he just generally loves anything firefighter-related so this is a no brainer, but this one is pretty different.
I personally find it a bit obnoxious, but appreciate the premise. Basically, the book is filled with firefighter jargon and then at the back there's a glossary. He likes having me look up the unfamiliar lingo in the back. From the perspective of our word- and dictionary-nerd family, this is kind of great. But the book itself is annoying and the use of slang is forced and awkward.
I was glad when this one had been returned to the library. But it turns out there are others in this series. On our last library visit, we picked up Rhinos Who Skateboard. Somehow, the skateboarding one appeals to me a lot more. The overuse of slangy expressions just seems much more apropos in a book about skateboarding than in one about firefighters. However, the kid doesn't seem to dig it as much, because the firefighting aspect was the part he was most in to in the first place.