Pygmy mammoths are descendants of the Columbian mammoth. The resulting calf would have the genes of the woolly mammoth. DNA studies have helped determine the phylogeography of the woolly mammoth. The thriving population lived by hunting game such as horses, bison, mammoth and woolly rhinos. Its tail was intermediate in length between that of modern elephants and the woolly mammoth. Distortion in the molars is the most common health problem found in woolly mammoth fossils. She has a baby wooly mammoth named Shiver. The state fossil is the Columbian mammoth. Archaeological Reconnaissance in Mammoth Cave National Park. Woolly rhinoceroses mostly fed on grasses and sedges that grew in the mammoth steppe. In southern Russia, carved bracelets made of mammoth tusk have been found. The diet of the woolly mammoth was mainly grasses and sedges. Caves in the area were known before the discovery of the entrance to Mammoth Cave. The story of human beings in relation to Mammoth Cave spans five thousand years. The finders interpreted this as indicating woolly mammoth blood possessed antifreezing properties.