East Siberian brown bear, Ursus arctos collaris 1, and brown bear, Ursus arctos 2. Lithograph by Karl Joseph Brodtmann from Heinrich Rudolf Schinz's Illustrated Natural History of Men and Animals, 1836.

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Photo credit: © Florilegius / Alamy / Afripics
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Keywords: animals, arctos, bear, brodtmann, brown, collaris, east, heinrich, history, illustrated, joseph, karl, lithograph, mammal, men, natural, rudolf, schinz, siberian, ursus, zoology