Three Lions Dead from Suspected Heatstroke at Tokyo Zoo as Japan's Heatwave Intensifies

Three lionesses aged 3 to 15 died of suspected heatstroke at Tokyo's Tama Zoological Park between July 31 and August 4, 2026, with a veterinarian citing dehydration and multiple organ failure. Since mid-July, 10 of the park's 16 lions showed heat-related symptoms; several remain under treatment. Japan's heatwave has sent 18,600 people to hospitals in one week, with 45 dead on arrival.