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Extreme Heat Kills Three Lions At Tokyo Zoo, Dehydration Suspected As Cause
24htopnews | August 5, 2026 8:09 PM CST

Three lionesses at Tokyo's Tama Zoological Park died within a week after falling ill during Japan's record-breaking heatwave. According to the zoo, the animals showed signs of dehydration and multiple organ failure, with heat stress suspected as a contributing factor. Several other lions remain under treatment as Japan continues to battle extreme temperatures exceeding 40°C.

Japan's relentless summer heat is now taking a toll on wildlife. Three lions at a Tokyo zoo have died within days of each other after falling ill during an intense heatwave, highlighting the growing impact of rising temperatures on animals as much as humans.

Three lions die within a week

The deaths occurred at Tama Zoological Park in Hino, located in the greater Tokyo metropolitan area. According to a statement released by the zoo, the lion enclosure was temporarily closed in late July after several big cats began displaying worrying symptoms, including unusual tiredness and a loss of appetite.

The illnesses emerged during exceptionally high temperatures that have gripped Japan and several parts of East Asia.


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