Hopefully someone will remember this book title...it was Spike Milligan (almost 100% sure) and each page was an animal and you could flip over the different sections to make it another animal - like it could be the top of a bird, then an elephant then a crocodile, or it could just be the elephant. And then they would have funny names.
I have had a google search and the only thing that looks likely is 'Condensed Animals' but I can't view any of the inside pictures!
If anyone has any ideas I would be super grateful 