It's pretty simplistic. It kind of makes me think of Richard Scarry's Cars and Trucks and Things that Go, which my kid had a copy of and which was a lot more interesting than this book, but apparently a lot of fun to rip into pieces as well.
Mundane walk through the forest with fanciful animals.
There's no real message. It doesn't really go anywhere. The animals don't really do anything. There aren't any characters. Nobody really has a personality.
It's a recognition of the important role that pets play in people's lives, understanding that just as it's difficult for children to accept new siblings, it's also difficult for the pets to accept it.
It's just supposed to be a lift-the-flap book, but I think by the time the kids are old enough to lift the flaps without just tearing them to shreds, they're kind of beyond this. Maybe most kids aren't as destructive as mine was.
It presupposes a world where mice are intelligent and humans exist but don't realize that the mice are intelligent, which is kind of a difficult world to live in when you realize that we kill mice for pretty trifling things. But, you know.
And even if they were real bones, dogs don't just like love bones. In the same way that mice just don't love cheese. This is just inane. There's no real message. There's no real point.