Animal including salt water, hydrothermal vents, fresh water, hot springs, swamps, forests, pastures, deserts, air, and the interiors of animals, plants, fungi and rocks. Animals are however not particularly heat tolerant; very few of them can survive at constant temperatures above . Only very few species of animals (mostly nematodes) inhabit the most extreme cold deserts of continental Antarctica. The blue whale ("Balaenoptera musculus") is the largest animal that has ever lived, weighing up to 190 metric tonnes and measuring up to long. The largest extant terrestrial animal is the African bush elephant ("Loxodonta africana"), weighing up to 12.25 tonnes and
Largest prehistoric animals largest-known frog ever was a yet unnamed species frog that was about . The largest-known diacectid, "Diadectes", was a heavily built animal, long, with thick vertebrae and ribs. The largest-known anthracosaur was "Anthracosaurus", a predator. It could reach up to in length. "Eogyrinus" commonly reached ; however, it was more lightly built. The largest-known temnospondyl amphibian is "Prionosuchus", which grew to lengths of . The largest-known of these was the long "Rhizodus". The largest-known bony fish of all time was the pachycormid, "Leedsichthys problematicus", at around long. Claims of larger individuals persist. The largest-known of ichthyodectiform fish was "Xiphactinus", which