From a heavyweight hippo to a feather-light frog, this peek-through collection of animal opposites makes learning come to life!

Fhiona Galloway has been a freelance illustrator for many years and has enjoyed illustrating for a wide base of clients, including many children's publishers, which she loves. She lives in the west of Scotland with her husband, daughter and giant schnauzer and when she's not working, likes to spend time walking, watching films and reading. Jonathan Litton has written numerous children's books in prose and verse. He loves using his science background to write about sea creatures, space and saving the planet, but is also fond of penning stories about pirates, princesses and picnics. When not writing, he can usually be found on his bike.