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Two of the world's rarest endangered big cats arrive at Chester Zoo as part of a conservation programme

Two of the world's rarest big cats have arrived at Chester Zoo as part of a conservation programme to help save their ...
insider.si.edu

Giant sloths and sabertooth cats : extinct mammals and the archaeology of the Ice Age Great Basin / Donald K. Grayson ; with animal reconstructions by Wally Woolfenden

Sloth in prison -- The Great Basin now and then -- A zoologically impoverished world -- Dating an ass -- A stable of ground sloths -- Extinct mammals, dangerous plants, and the early peoples of the ...