Ep 19. Episode 19

There's concern as the team tries to find out what's wrong with elderly chimpanzee Kalu. Wildlife vet, John Lewis and vet, Dave Harding come together to examine Kalu to try and diagnose what's causing her health problems. We catch up with Bart's chimpanzee group, and while most are doing well there's a growing question mark over what's happening with Cathy.