Species can be arboreal, fossorial (burrowing), or semiaquatic. It feeds primarily on specific snakes, probably semiaquatic and fossorial snakes. Most monitor species are terrestrial, but arboreal and semiaquatic monitors are also known. Various species were aquatic, semiaquatic, or terrestrial. Capybaras are semiaquatic mammals found throughout almost all countries of South America except Chile. Steller sea lions have used aquatic, semiaquatic, and terrestrial territories. The Later Jurassic, Cretaceous, and Cenozoic saw a wide diversity of terrestrial and semiaquatic lineages. Phytosaurs are an extinct group of large, mostly semiaquatic Late Triassic archosauriform reptiles. Both subfamilies include semiaquatic species capable of constructing dams. Larval habitats include all kinds of freshwater, semiaquatic environments. Like the capybara, the beaver is semiaquatic. Like other Mesozoic temnospondyls, adult metoposaurids were adapted to a semiaquatic lifestyle. Aquatic and semiaquatic animals, including otters and penguins, may also be kept by public aquaria. Several groups however remained aquatic or semiaquatic. Triassic temnospondyls were often the dominant semiaquatic animals in their environments.