Hi Clare,
Welcome. Just had a look at Rumble In The Jungle, it's lovely. I'm thinking of getting it for my youngest (she's 17months) as she loves to look at animal pictures and I think this would really appeal to her.
Another great animal book is Snake Supper by Alan Durant and Ant Parker .A slithery snake slips through the forest.See what he eats fir his supper. Made a story sack ,snake bought in Ikea(cut his mouth wider!) Children love this story as in the end all the animals are saved!