"He spends a great deal of his time exploring the trees for his prey."

Fisher (Martes pennanti)
Title: Familiar life in field and forest; the animals, birds, frogs, and salamanders
Year: 1898 (1890s)
Authors: Mathews, F. Schuyler (Ferdinand Schuyler Mathews), 1854-1938 William Lyman Underwood, phot
Source: https://commons.wikimedia.org/wiki/File:Familiar_life_in_field_and_forest;_the_animals,_birds,_frogs,_and_salamanders_(1898)_(14732379066).jpg

The fisher (Pekania pennanti formerly Martes pennanti) is a small carnivorous mammal native to North America. It is a member of the Mustelidae (weasel family) and a part of the marten genus. The fisher is a forest-dwelling creature whose range covers much of the boreal forest in Canada to the northern United States. Names derived from aboriginal languages include pekan, pequam, wejack, and woolang. It is also called a fisher cat.