A look back at some memorable moments of bad behaviour at Chester Zoo. With animals originating from 150 different countries, some of the zoo's species tend to be more of a handful than others. Chester's troupe of West African chimpanzees have a reputation for behaving badly, which 21-year-old Pattie lives up to. Kendari, a babirusa, shares her habitat with a pair of noisy short-clawed otters. The otters are rehoused alongside the Bornean orangutans, and more trouble follows. Meanwhile, Natasha the orchid mantis has eaten all the male mantises in the zoo - except for Bruce
