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The River otter is adapted for both terrestrial and aquatic environments. The heavily muscled, somewhat cylindrical body is thickest at the thorax and tapers posteriorly to a thick, flattened tail. The body tapers to a blunt and slightly flattened head. The legs are short and powerful; and the toes are webbed. The eyes are small, forwardly directed and set high on the head. The underfur is grayish, short, and dense, and overlain by longer, stiff and shiny guard hairs. The dorsum is brown and the venter a lighter brown or tan; the lower jaw and throat are whitish. In Oregon
The Western spotted skunk is smaller and more weasel-like than the Striped skunk. The pelage is black with a somewhat pentagonal white patch between the eyes, a round white patch on each side of the head and four or six segmented white body stripes. This skunk is endowed with a muscle-encapsulated musk gland similar to those of the Striped skunk and so similarly, can eject musk from two papillae located under the tail. The odor of the musk is considered somewhat more pungent or acrid but is less spreading than that of the Striped skunk. In Oregon, this skunk occurs
The Striped skunk is about the size of a house cat with a pointed head; slightly upturned, nearly spherical nose pad; and beady black eyes. The pelage is entirely black except for a narrow white stripe on the forehead and nose, a white pate leading to two diverging white stripes on the back that extend partly or completely to the rump. Entirely white skunks, or skunks with the black replaced by seal brown or the white replaced by yellow are also know to occur. Without doubt, the most widely recognized characteristic of the Striped skunk is the pungent odor of
Oregon's three cat species all belong to the same family as the domestic house cat. Cats are muscular but graceful and have retractable claws to hold prey.
The Canada lynx is only slightly larger than the bobcat. Nevertheless, long legs and long fur produce the illusion that the lynx is considerably larger than it actually is. Documented accounts of wild lynx are rare and lynx are not expected to currently reside in Oregon. However, if lynx were to be observed, it is likely to occur at higher elevations such as in the Cascade Range, Blue Mountains or Wallowa Mountains. Habitats used by lynx often are defined in terms of habitats used by their primary prey species, thus good snowshoe hare habitat usually is considered to be good
The bobcat is the smallest wild felid in Oregon, with females being considerably smaller than males. The bobcat is about twice the size of a domestic cat, but its legs are longer, its tail is shorter, and its body is more muscular and compact. The feet are relatively small and the bobcat is not well adapted to negotiate deep snow. In general, the variously spotted pelage is yellowish with grayish overtones in winter and with reddish overtones in summer, reflecting the two annual molts. The ears are black with a large white spot and are equipped with short black tufts
Oregon's hoofed mammals include three sub-species of deer, along with moose, elk, goat, and sheep. Otherwise known as ungulates, these animals are herbivores.
The mule deer is the larger member of the genus in Oregon. The ears are long, the metatarsal gland is surrounded by hairs similar in color but considerably longer than those on the remainder of the metatarsus, and the tail is short and constricted basally. Among adult males, the antlers are dichotomously branched with tines of approximately equal length. In winter, the basic pelage color is cinnamon buff. The chest is nearly black at the midline grading to grayish on the sides. The nose, sides of face, chin, and throat are whitish to pale buff. Spots of black occur immediately
The moose is the largest member of the family Cervidae. The pelage is blackish or dark brownish grading to dark gray or grayish brown on the venter and leg. The muzzle is broad and overhanging, the palmate antlers of adult males are massive, and a "bell" (waddlelike flap of skin on the throat) is present. The first moose to come to Oregon wandered south from Washington or west from Idaho across the Palouse Prairie. They stayed to establish a herd in the Blue Mountains north of Elgin, and today there are an estimated 50 adults and calves in the area
The pronghorn, often called "antelope," is deer-sized with relatively long and thin legs and feet with just two digits on each foot, a relatively small tail, and unique horns consisting of deciduous keratin sheaths set on bony cores arising from the fontal bones. Among males, the laterally flattened sheaths are long, branched and recurved, but in those females that possess horns they are short and simple. The horns and hooves are black. The front feet are larger and carry most of the weight when the pronghorn runs. The pelage is course. The dorsum is a light buff and is separated
The mountain goat is a stockily built bovid with black scimitar-shaped horns, large black hooves and prominent dew claws, and an entirely white, wooly pelage. Sometimes the pelage contains scattered brown hairs on the dorsum and rump. A long beard, pointed ears, and a squarish muzzle are also characteristic. Males are larger, and have longer, larger-diameter, and more evenly curved horns that females. Mountain goats are denizens of high altitudes, remote, and barren montane regions where they are capable of moving through exceedingly rugged and precipitous terrain with speed and agility. Nevertheless, mountain goats are known to fall occasionally, whereupon
The bighorn sheep is a medium-sized, largely brownish bovid with a white rump patch, muzzle, venter, and rear portion of the legs. The tail is blackish brown on the exposed surface. The hooves are equipped with a rubberlike pad that facilitates negotiating rocky terrain. The ears are relatively small and somewhat pointed. Both sexes are equipped with horns; those of males are massive and spiral outward, whereas those of females are relatively thin, recurved, and mostly directed upward and posteriorly. Horn growth reflects nutritional status. Bighorn sheep are capable of moving with speed and agility through the precipitous terrain in
There are about 80 species of whales, dolphins and porpoises with 10 of those in the waters off Oregon's coast. These include the mighty gray whale, the awe-inspiring killer whale, and the charming and intelligent bottlenose dolphin.
Blue whales are occasionally spotted off Oregon, but usually no closer than 10 miles offshore. These whales are part of the Eastern North Pacific population that range from Alaska to Costa Rica. They migrate between feeding areas along the west coast of the United States and Canada and breeding and calving grounds off Mexico and Central America. They are thought to be among the most endangered of the great whales. Photo by NOAA
The minke whale is one of the smallest baleen whales, growing to about 35 feet. They feed along the coast in the same area as gray whales. It is close enough in size to a gray whale that you could mistake one for the other at a distance. At close range, however, the difference is apparent. Minkes have a dark black or gray, sleek body with a white underside. They are often recognized by surfacing snout first and a small, weak, but visible, bushy blow that is about six to 10 feet high. When diving, they do not display their
Humpback whales are seen during their north and south migrations from northern waters to breeding grounds near Hawaii and also feeding offshore during the summer. Humpbacks have been documented travelling 3,000 miles between Alaska and Hawaii in as few as 36 days. They are usually five to 15 miles offshore, so they are most often seen by fishers. Humpback whales live in all major oceans from the equator to sub-polar latitudes. Humpbacks eat primarily krill and small fish and can consume 3,000 pounds of food a day. Humpbacks grow to 60 feet in length with a stocky body, an obvious
Sperm whales inhabit all oceans of the world, and have been observed in Oregon waters from March through November. Sperm whales are usually found in deep off-shore waters so they are only occasionally seen off Oregon by fishers and birders on offshore trips. It is the largest of the toothed whales and possesses the largest brain of any animal with an enormous head to house it. Sperm whales have 20 to 26 large conical teeth found only in their lower jaw. A mature male can grow to 52 feet long with its head representing up to one-third of its length
The Pacific white-sided dolphin is most abundant in the Southern California Bight in winter, but move further north, off Oregon and Washington in summer. These animals can be found from the tip of Baja to the Aleutians and the western Pacific from the Kuril Islands to Japan. They prefer deep, off-shore waters, so sightings are usually limited to recreational and commercial fishers. The Pacific white-sided dolphin is about seven or eight feet long. It has three colors: the chin, throat and belly are creamy white; the beak, flippers, back, and dorsal fin are a dark gray, and there are light
The bottlenose dolphin is the most common of the oceanic dolphins and can be found in all tropical and temperate oceans. Flipper was a bottlenose dolphin. Their considerable intelligence and permanently-affixed smile make them a favorite of aquarium and television shows. The U.S. Navy also uses bottlenose dolphins to find mines and booby traps underwater. Oregon is the northern extent of its range on the West Coast. They are most often seen offshore during the summer by tuna and other fishers. They are gray with light gray to white on the undersides. In size they range from six to 13