To survive, the polar bear must keep its body at the right temperature and store enough energy to last between meals that could be a few days or a few months apart.とは 意味・読み方・使い方

smaller of two tall fast-running flightless birds similar to ostriches but three-toed

The turtles have a fully developed lower shell, but their upper shell is immature.

raccoon-like omnivorous mammal of Mexico and the southwestern United States having a long bushy tail with black and white rings

fleet antelope-like ruminant of western North American plains with small branched horns

important deep-bodied food and sport fish of warm and tropical coastal waters

any of various large diurnal birds of prey having naked heads and weak claws and feeding chiefly on carrion

small wild or domesticated web-footed broad-billed swimming bird usually having a depressed body and short legs

decapod having eyes on short stalks and a broad flattened carapace with a small abdomen folded under the thorax and pincers

Futa is a 2-year-old male lesser panda living in the Chiba Zoological Park, Chiba Prefecture.

an extinct reptile of the Jurassic and Cretaceous having a bird-like beak and membranous wings supported by the very long fourth digit of each forelimb

(of bird feet) having the first and fourth toes directed backward the second and third forward

long-legged aquatic insect having the front legs fitted for seizing and holding prey and the abdomen extended by a long breathing tube

any of various small short-tailed songbirds with strong feet and a sharp beak that feed on small nuts and insects

predatory arachnid with eight legs, two poison fangs, two feelers, and usually two silk-spinning organs at the back end of the body

The upper part of the creature’s pelvis gives indications that it walked upright, but the lower part suggests the creature was also suited for climbing trees.

snakelike lizard of Europe and Asia and North America with vestigial hind limbs and the ability to regenerate its long fragile tail

any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs

biradially symmetrical hermaphroditic solitary marine animals resembling jellyfishes having for locomotion eight rows of cilia arranged like teeth in a comb

small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors

large gregarious crane-like bird of the forests of South America having glossy black plumage and a loud prolonged cry

massive plantigrade carnivorous or omnivorous mammals with long shaggy coats and strong claws

small furry Australian arboreal marsupials having long usually prehensile tails

any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legs

tiny soft-bodied crab living commensally in the mantles of certain bivalve mollusks

either of two Welsh breeds of long-bodied short-legged dogs with erect ears and a fox-like head

chiefly nocturnal predacious arthropod having a flattened body of 15 to 173 segments each with a pair of legs, the foremost pair being modified as prehensors

one of the paired abdominal appendages of certain aquatic crustaceans that function primarily for carrying the eggs in females and are usually adapted for swimming

any of a group of very small rod-shaped bacteria that live in biting arthropods (as ticks and mites) and cause disease in vertebrate hosts

long-legged three-toed black-and-white wading bird of inland ponds and marshes or brackish lagoons

aquatic crustaceans typically having a carapace and many pairs of leaflike appendages used for swimming as well as respiration and feeding