Help me find a book from my childhood. Hand drawn illustrations of rainforest animals

Hey guys I’m trying to track down a book(and I believe it was a series. That was full of hand drawn pictures of rainforest animals. The cover of the main one had a full page drawing of a golden lion tamarins face(I’ll try to attach a picture of what it looked like) They were about the same dimensions as a magazine.

This is roughly what the cover looked like but it was a drawing https://i.imgur.com/6XeEWdg.jpg