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Adult treefrogs have a dark mask that extends from the tip of the nose across the eyes to the shoulders. Coloration varies between individuals, ranging from green or reddish to brown or gray. Most have dark blotches along their sides with light colored bumpy undersides. They have special skin glands that produce a waxy coating to keep their skin moist. Male treefrogs have a dark gray, inflatable throat pouch during the breeding season. As the smallest frog species in Oregon, adult Northern Pacific treefrogs only grow to two inches in length. During the non-breeding season, this treefrog is found in

The Norway rat is the largest member of the subfamily in Oregon. This heavy-bodied rat has a scantily haired, scaly tail shorter than the length of the head and body. The ears are membranous and lightly furred. The pelage is course, a grizzled brownish or rusty gray dorsally and dirty white to yellowish gray ventrally. Albino, melanistic, and spotted specimens are known to occur in free-living populations. This rat is distributed throughout the world in association with humans and in Oregon is found in most of the counties west of the Cascade Range and from some counties along the Columbia

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

Features: These fish have dark blue backs, silver sides and bellies, and very long pectoral (side) fins. Albacore caught off the Pacific Coast are generally 21 to 30 inches long with the largest fish running about 35 pounds. Habitat: Tuna are pelagic species, meaning they spend their lives in the open ocean. Albacore generally show up 15-200 miles or more off the Pacific Coast in mid-July and stick around through September. Albacore are usually found where surface water temperatures are at least 59 degrees Fahrenheit and the water has a distinct clear blue color (this is where chlorophyll levels are

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

Features: Butter clams have oval and oblong shaped shells with heavy, thick valves and hinge. Their shells have fine concentric rings. When the shell is open a little, you can see the pale ruffled mantle reminiscent of a tuxedo. Like the gaper clam, they have their two siphons fused together into one "neck." Average adult size is 3-4 inches but can range up to 5 inches. Butter clams can live more than 20 years. Habitat: Butter clams can be found in a wide variety of substrates but prefer sand and gravel/cobble beaches. They live approximately 6-12 inches deep and can

Lizards are more like ancient reptiles than either snakes or turtles. There are more than 2,500 species of lizards known in the world and they range from legless, snake-like varieties to the better known, four-legged type with five toes on each foot and scaly skin. Most lizards lay eggs but some give birth to live young. Most eat insects and small animals; some eat plants. Many lizards are very fast and most can swim. Some can even "swim" through sand, just below the surface. Lizards don't like to be caught and several species will take some pretty drastic steps to

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