Chester Zoo's alpha male lion is having a crisis of confidence. There's been a bloodbath among the vampire crabs. And affable Andean bear Bernie has been kicked out of the family paddock.

Chester's chimps have lacked a dominant female for several years. Vila seems ready for the role, until she is attacked by Alice, a higher-ranking female. Four-year-old Sumatran tiger Kasarna is living in the shadow of her domineering mum Kirana. But if she is ever to mature into a healthy breeding female, she needs to find some confidence and make her own mark.