Learn about some of the most fascinating lizards on earth as we talk ?tree monitors? with keepers at London Zoo, Crocs of the World and Birmingham Wildlife Park.

Dr Jennifer Lamb shares a major discovery in the world of amphibians. We also discuss hand-rearing lovebirds with expert breeder Teresa Masuet. Ever wondered why koi are so expensive? Find out in this issue!

Plus, Keeper Basics: Bioactive, news, facts and more.