Fossil remains of beavers are found in the peat and other superficial deposits of Britain and the continent of Europe ; while in the Pleistocene formations of Britain and Siberia, remains of a giant extinct beaver have been found, Trogontherium cuvieri, representing a genus by itself.

* Castor, a genus name of the beaver

A new genus of beaver ( Rodentia, Castoridae ) from the Miocene ( Clarendonian ) of North America and systematics of the Castoroidinae based on comparative cranial anatomy Annals of Carnegie Museum 76 ( 2 ): 117-134.

These two species of giant beaver ( genus Castoroides ) are not close relatives to modern beavers ( genus Castor ).

It seems that in North America, " nutria " means " coypu " ( myocastor coypus ), an animal related to the beaver ( genus castoridae ).

Before 1850, most of the freshwater on the islands was held in beaver ( Castor canadensis ) ponds, although the aquatic mammal was extirpated by Hudson's Bay Company fur stations at Fort Langley and San Juan Island.

Among these are red and gray squirrels, chipmunks, white-tailed deer, moose, beaver ( Castor canadensis ), porcupine, muskrats, foxes, coyote, bobcats, and black bears.

Non-government sanctioned re-introduction of Eurasian beaver ( Castor fiber ) in Spain around 2003 has resulted in tell-tale beaver sign documented on a 60 km stretch on the lower course of the Aragon River and the area adjoining the Ebro River in Aragon, Spain.

The recent return of beaver ( Castor canadensis ) to Lake Sammamish worries City of Issaquah and Lake Sammamish State Park officials who state that the mammals will cause flooding and burrow under roadways.

Bones of wolf, North American beaver ( Castor canadensis ), deer, elk, Gray seal ( Halichoerus grypus ), the Indian dog, and Sea Mink ( Neovison macrodon ), as well as large numbers of raccoon, lynx, wolf, muskrat, and deer.

North American beaver ( Castor canadensis ) have recolonized the Kings River including Kings Canyon National Park.

In February 2007 biologists with the Wildlife Conservation Society, which operates the Zoo, spotted a beaver ( Castor canadensis ) in the river.

North American beaver ( Castor canadensis ) were re-introduced to the Carson River watershed around 1940 and populations have thrived since.

The wetlands and floodplain forests provide habitat to nearly half of all migratory birds in Indiana and Michigan and are a vital habitat for resident species as well, such as wild turkey, coyote, fox, beaver ( Castor canadensis ), mink ( Neovison vison ), Indiana bat ( Myotis sodalis ), eastern box turtle ( Terrapene carolina carolina ), and the rare spotted turtle ( Clemmys guttata ) and Northern Redbelly Snake ( Storeria occipitomaculata occipitomaculata ), both protected by the State of Michigan.

In 2008, after public outcry, the City of Bakersfield and the California Department of Fish and Game ( CDFG ) decided to relocate a family of California Golden beaver ( Castor canadensis subauratus ) instead of killing them.

Aquatic and semi-aquatic mammals include California Golden beaver ( Castor canadensis subauratus ), muskrat, raccoon and long-tailed weasel.

North American beaver ( Castor canadensis ) were trapped " with considerable success " on the Verde River by fur trappers led by Ewing Young, and including Kit Carson, dating to 1829.

The Eurasian beaver or European beaver ( Castor fiber ) is a species of beaver, which was once widespread in Eurasia, where it was hunted to near extinction both for fur and for castoreum, a secretion of its scent gland believed to have medicinal properties.

Image: Biberschaedel-drawing. jpg | Skull of a beaver ( Castor )

Castor is French ( Latin ) for beaver ( the nearby Battle River is home to these animals ).

Two fossilized teeth found recently in the Rattlesnake stratum near Dayville are the earliest record of beaver, Castor californicus, in North America.

The North American beaver ( Castor canadensis ) is one of the two beaver species.

Its other vernacular names, including American beaver and Canadian beaver, distinguish this species from the one other extant beaver, Castor fiber, native to Eurasia.

In money games, a player is often permitted to " beaver " when offered the cube, doubling the value of the game again, while retaining possession of the cube.

A variant of the doubling cube " beaver " is the " raccoon.

Thackston argues that the name cannot be taken from babr and instead must be derived from a word that has evolved out of the Indo-European word for beaver, pointing to the fact that the name is pronounced bāh-bor in both Persian and Turkic, similar to the Russian word for beaver ( бобр – bobr ).

An occasional misconception is that the number of stripes is related to its value in beaver pelts.

There is also a range of rodent species including beaver, squirrel, mountain hare, snowshoe hare, and vole.

Gnawed stumps and beaver sign are now seen on Orcas and other islands, and recolonization by this keystone species is likely to lead to increased abundance and diversity of birds, amphibians, reptiles and plants.

Under the storm and closer to where most tornadoes are found, evidence of a supercell and likelihood of a tornado includes inflow bands ( particularly when curved ) such as a " beaver tail ", and other clues such as strength of inflow, warmth and moistness of inflow air, how outflow-or inflow-dominant a storm appears, and how far is the front flank precipitation core from the wall cloud.

Beaver is a color that is a representation of the average color of the fur of a beaver.

In most of Canada the term is synonymous with the fur trade, since fur for making beaver hats was by far the most valuable product of the trade, from the European point of view.

John Colter is widely considered the first mountain man and, like those that came to the Jackson Hole region over the next 30 years, he was there primarily for the profitable fur trapping ; the region was rich with the highly sought after pelts of beaver and other fur bearing animals.

The national park lies within the Colorado Plateau geographic province of North America and straddles the southeastern edge of the Paunsagunt Plateau west of the Paunsagunt Fault ( Paunsagunt is Paiute for " home of the beaver ").

In computability theory, a busy beaver ( from the colloquial expression for an industrious person ) is a Turing machine that attains the maximum " operational busyness " ( such as measured by the number of steps performed, or the number of nonblank symbols finally on the tape ) among all the Turing machines in a certain class.

A busy beaver function quantifies these upper limits on a given type of " operational busyness ", and is a noncomputable function.

The n-state busy beaver game ( or BB-n game ), introduced in Tibor Radó's 1962 paper, involves a class of Turing machines, each member of which is required to meet the following design specifications:

* Roscoe, a " Ghod " in science fiction fandom, whose shape is a beaver and whose birthday is Labor Day.

His name is a pun on the idiom " eager beaver ".

Beverly or Beverley was a surname deriving from a place name meaning " beaver stream " in Old English which is now more commonly a female name.

On the front is the escutcheon from the state seal and on the reverse is a gold figure of a beaver, the state animal.

On the reverse of the flag is a depiction, also in gold, of a beaver, the state animal of Oregon.