ailuropoda andes animal argentina bear binomial nomenclature biological classification bolivia brazil caniformia carnivora chordate colombia conservation status diurnal ecuador georges cuvier glasses hibernation humerus iucn red list jaguar kilogram late pleistocene mammal middle pleistocene osaka paddington bear panama paul gervais peru puma rainforest sloth bear south america stephen fry sun bear tremarctinae venezuela vulnerable species wikimedia commons wikispecies