Alan Toyne, who spent 14 years working at Bristol Zoo, raised two infant gorillas - including one in his own home. He has now published a memoir, Gorillas in Our Midst, about the "amazing" experience.

Keepers say the animal is eating a full diet ... Smithsonian/Roshan Patel Zoo teams are cautiously optimistic. If the treatment holds, it could add several healthy years to the lizard’s life.