Sadly, today the rhinoceroses are few on the ground. There are only five extant species of the family Rhinocerotidae and none of them are doing well–because of habitat loss and humankind’s obdurate (and extraordinarily foolish) belief that rhino horns have magical supernatural powers. Yet once the rhinos were a mighty force—in fact, the largest land mammal ever, the Paraceratherium, was a sort of rhino. There used to be multiple tribes of Rhinocerotidae, each containing numerous genera (which could in turn contain dozens of species) of these great horned perissodactyls. None of the extinct rhinos was more splendid that the magnificent wooly rhino (Coelodonta antiquitatis) which roamed Eurasia during the icy Pleistocene epoch and even survived (probably) up until the beginnings of human civilization.
A wooly rhinoceros was a substantial creature. From fossils and mummified remains, we know they measured around 3 to 3.8 metres (10 to 12.5 feet) in length, and had an estimated weight of around 2,700–3,200 kg (5,999–7,000 lb)—so they were not much smaller than the still-living white rhinoceros (although wooly rhinoceroses are more closely related to the contemporary Sumatran rhinos—which do not become so big and heavy). As you might guess from the name, wooly rhinoceroses had magnificent hairy coats to help them survive the cold and they had two large horns for defense and for mating displays. For a long time, paleontologists have argued about whether the Coelodontas grazed grasses or browsed on tender shoots, berries, and mosses, but paleobotanical evidence (taken in tandem with fossilized skeletal features) now seems to indicate they were browsers, like bison or cows.
Wooly rhinos roamed the frozen steppes of Eurasia–a habitat which was much larger in those days due to the ice age and the lower sea levels of the Pleistocene. For example, wooly rhinos could be found on the dry & icy wastelands of Southern England and they thundered across the cold plains which would later become the fertile hunting lands of Doggerland (which are now submerged beneath the North Sea). They were also prevalent across northern Europe and down through Central Asia all the way to the Tibetan Plateau.
Based on cave paintings from tens of thousands of years ago, humankind seems to have had an early fascination with these great furry beasts. Unfortunately the last wooly rhinos apparently went extinct around eight to ten thousand years ago (according to somewhat disputed carbon 14 readings from a specimen found frozen in the Siberian permafrost). Many large species of Paleocene megafauna died off at approximately the same time: whether the great behemoths went extinct from humanity’s increasingly effective hunting, climate change, or from some great pandemic which affected large animals is unclear (although contemporary scientists have been inclining towards climate change as a primary cause).