Several types of animals live in the Earth's cold polar regions, including polar bears, Arctic foxes, whales, Arctic wolves, brown bears, Pacific salmon, caribou, walruses, auks, penguins, Arctic owls, lemmings, Arctic hares, narwhals and killer whales. Due to a lack of vegetation, most animals in the polar regions are carnivores. Penguins feed on fish in cold Antarctic waters. Meanwhile, leopard seals and killer whales feed on penguins.Know More
Close to the North Pole, lemmings and Arctic hares eat what little vegetation that grows from the ground; foxes, owls and wolves follow these smaller herbivores and eat them. The top of the Arctic food chain features polar bears and Arctic wolves. Fish-feeders of the Arctic include sea lions, seals, narwhals, walruses, killer whales and whales.
The South Pole contains different animals. Penguins live on the mainland and on islands surrounding the continent. These flightless birds eat fish, crabs, lobsters and mollusks in the surrounding waters. Leopard seals inhabit the islands, while killer whales swim near the coast to eat penguins. Whales follow food sources towards Antarctica when currents take fish, krill and plankton to these colder waters.
An international treaty prevents any individual country from claiming territory on Antarctica. The Arctic Circle covers territories of a few countries such as Norway, Sweden, Finland, Russia, Canada and the United States.Learn more about Zoology
Animals that live in a humid continental climate or a warm summer climate include brown bears, gray wolves, wild boards, foxes and roe deer. The humid continental climate promotes the growth of deciduous forests, which in turn support squirrels, hares and deer.Full Answer >
Despite the harsh climate, the tundra is home to many animals, including herbivores, such as lemmings, voles, and caribou, and predators, such as polar bears, wolves and foxes. In addition to a few species, which inhabit the tundra all year, a number of migratory birds inhabit the area during the summer. Insects are also important residents of the tundra, as they are in most other terrestrial habitats.Full Answer >
A notochord can be found in the embryos of all chordates, the phylum which contains the subphyla of fish, mammals, reptiles, birds and amphibians. The notochord defines the primitive axis of the embryo, is a transient embryonic anatomy structure and is not usually found in adults.Full Answer >
Animals that come from eggs include echidnas and platypuses, which are marsupials found in and around Australia. Other animals that come from eggs are birds, cobras and crocodiles.Full Answer >