Brown Bears: Walker Books

Dr Nick Crumpton is a zoologist and children's author. He grew up in the UK Midlands but has worked as a biologist in Indonesia, North America and central Europe. He received his PhD from the University of Cambridge and works at the Natural History Museum in London. He writes about his passion - biodiversity, both living and extinct - and has a particular fondness for weevils and sharks. Follow him on Twitter as @LSmonster.

Colleen Larmour is an illustrator and designer. She first studied art at Liverpool Art School, with a focus on children's animation and design, before completing an MA in Children's Book Illustration at the Cambridge School of Art. As well as children's illustration, Colleen has produced artwork for magazines, client commissions and her own online shop Little Carousel.