Physical Characteristics
Fully grown, a Japanese otter was between 65 and 80 cm (25–31 in) long, with a tail measuring 45 to 50 cm (17 to 20 in). It had a thick, lush coat of dark brown fur with short webbed feet.
Read more about this topic: Japanese River Otter
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“I hope I may claim in the present work to have made it probable that the laws of arithmetic are analytic judgments and consequently a priori. Arithmetic thus becomes simply a development of logic, and every proposition of arithmetic a law of logic, albeit a derivative one. To apply arithmetic in the physical sciences is to bring logic to bear on observed facts; calculation becomes deduction.”
—Gottlob Frege (1848–1925)