Inside notorious Thai zoo where world's loneliest gorilla is kept

Patagonian Mara rodents snuggle with boar to keep warm at zoo in Japan

Patagonian mara sits comfortably on top of boar at a zoo in Japan

Notorious Pata Zoo where 'world's loneliest gorilla' is kept reopens in Thailand

Zoo owners 'will only release world's saddest gorilla for $780k'