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In Oregon, the nutria is considered an invasive species. The nutria is a large rat-like semiaquatic rodent. The species has a hunched body; a round, nearly hairless tail; a valvular mouth and nose; and pentadactyl feet with naked soles. The toes of the hind feet, except for the hallux, are included in a web. As an adaption to the aquatic environment, the eyes, nostrils, and small ears are set high on the sides. The pelage consists of long, course guard hairs and soft, dense underfur. Overall, the color usually ranges from dark brown to yellow-brown. The muzzle is frosted with…

The elk is the largest cervid in Oregon. These heavy-bodied, deer-like mammals have narrow faces tapering to a naked nose pad; relatively small, pointed ears; a heavily maned neck; a back slightly humped at the shoulders, a contrasting rump patch; and a small tail. Pelage color is grayish brown to reddish brown, somewhat lighter among males in winter. The mane is dark brown and the rump patch and tail are cream colored. The underparts (except for a whitish patch between the hind legs) and legs are dark brown to almost blackish. Adult females, their current offspring, and their female offspring…

Searching for frogs and salamanders is a great way to introduce kids to the wonders of Oregon's wildlife and the great outdoors. Learn more about their various habitat needs and you'll increase your chances of seeing one of these unique species. Remember to leave no trace to preserve their habitat. Listen to a chorus of treefrogs, and check out our fun facts on Oregon's frogs.

The American bullfrog is a non-native invasive frog that survives and reproduces very successfully in Oregon. Bullfrogs aggressively compete for food and living space with our native frogs. They eat many types of native wildlife including other frogs, young pond turtles, and ducklings. Bullfrogs can lay almost 10 times more eggs than native frogs and can quickly out number them. Photo by Kathy Munsel

Oregon's owls are mostly nocturnal, hunting for insects, fish, frogs, birds, mice and other small mammals in the night. Their hoots, screeches and calls can be heard after dark or early in the morning. Owls don't build nests, but instead use tree cavities, nests created by other species, naturally occurring structures or human-made nest platforms. The Western burrowing owl nests underground in abandoned dens dug by squirrels, prairie dogs and badgers. Learn more about Oregon's owls.

Fun facts about our bats Oregon's bats eat only insects. An adult bat eats about 1,000 insects every hour! Bats hang upside down because it gives them an ideal position for take-off. Bats can fly 20 to 30 miles an hour and travel more than 100 miles a night. A baby bat is called a pup. Young bats can fly between two and five weeks of age. Bats are the only flying mammal. Other information Bat Conservation International Build a bat house: Four-Chamber Nursery House Plans (pdf) Two-Chamber Rocket Box Plans (pdf) Small Economy Bat Box Plans (pdf) Living with…

Bear facts: Is it a black bear or a grizzly bear? Oregon is black bear country. Although native to the area, there are no longer grizzly bears in the state. The last grizzly bear recorded was killed in the late 1930s at Billy Meadows, north of Enterprise in Wallowa County. However, because black bears are often brown, people sometimes wonder what species of bear they have seen. Here is some information on bear identification. Q. Grizzly bears are brown and black bears are black. Correct? A. Not really. Grizzly bears can be brown, blond, grey, reddish or silver tipped. Black…