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The groundhog (Marmota monax), also known as the woodchuck, is a rodent of the family Sciuridae, belonging to the group of large ground squirrels known as marmots. [2] A lowland creature of North America, it is found through much of the Eastern United States , across Canada and into Alaska . [ 3 ]
Muskrat skeleton Muskrat skull An adult muskrat is about 40–70 cm (16–28 in) long, half of that length being the tail, and weighs 0.6–2 kg ( 1 + 1 ⁄ 4 – 4 + 1 ⁄ 2 lb). [ 13 ] That is about four times the weight of the brown rat ( Rattus norvegicus ), though an adult muskrat is only slightly longer.
Black bear. Order: Carnivora, Family: Ursidae. Occurrence: Forests, slide areas, alpine meadows. The American black bear (Ursus americanus) is North America's smallest and most common species of bear. It is a generalist animal, being able to exploit numerous different habitats and foodstuffs.
The arthropods ancestrally possessed compound eyes, but the type and origin of this eye varies between groups, and some taxa have secondarily developed simple eyes. The organ's development through the lineage can be estimated by comparing groups that branched early, such as the velvet worm and horseshoe crab to the advanced eye condition found ...
Between birth and age 13 the eye attains its mature size. It weighs 7.5 grams and its volume is roughly 6.5 ml. Along a line through the nodal (central) point of the eye is the optic axis, which is at a slight slant of five degrees toward the nose from the visual axis (i.e., the section going towards the focused point of the fovea).
California’s eco-bureaucrats halted a wildfire prevention project near the Pacific Palisades to protect an endangered shrub. It’s just the latest clash between fire safety and conservation in ...
The grizzly bear (Ursus arctos horribilis), also known as the silvertip bear, is a subspecies of brown bear (Ursus arctos) that generally lives in the uplands of western North America. Grizzlies are normally solitary active animals, but in coastal areas the grizzly congregates alongside streams, lakes, rivers, and ponds during the salmon spawn .
Red, itchy, or watery eyes are common symptoms of seasonal allergies, but they're also signs of pink eye, or conjunctivitis. Here’s how to tell the difference. Red, itchy, or watery eyes are ...