Picture by Nissim.
Photo by: __maurice
Photo by: BrianScott
Naba, an African lion, keeps cool by licking a “bloodsicle” made of frozen cow blood, at the National Zoo in Washington. Zoos across the country use shade, water and every conceivable form of cooling machine to help hundreds of thousands of animals, visitors and workers beat the heat every summer.
(AP Photo/Charles Dharapak, FILE)
