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Cara Delevingne is one of those ladies I want to dislike, but just can’t bring myself to do so. She is a young, beautiful fashion model. Ergo, I should hate her. Müller-Schwarze, D.; Schulte, B. A.; Sun, L.; Müller-Schwarze, A.; Müller-Schwarze, C. (1994). "Red maple (Acer rubrum) inhibits feeding by beaver (Castor canadensis)". Journal of Chemical Ecology. 20 (8): 2021–2034. doi: 10.1007/BF02066240. ISSN 0098-0331. PMID 24242726. S2CID 13529462.

When herbaceous plants are actively growing, they make up much of the beaver's diet. In the winter, beavers switch to woody plants and the food they have stored over the winter. The protein to calorie ratio of a beaver's diet is 40mg/calorie in summer and 8mg/calorie for the rest of the year. In northern latitudes, the water lilies Nymphaea and Nuphar are the most important herbaceous component. The rhizomes are stored in the food cache and remain actively growing. [41] Hays, W. J. (September 1871). "Notes on the range of some of the animals in America at the time of arrival of the whitemen". The American Naturalist. 5 (7): 25–30. doi: 10.1086/270797. JSTOR 2447602.

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Beavers usually mate for life, forming familial colonies. Beaver "kits" are born precocious and with a developed coat. The young beaver "kits" typically remain with their parents up to two years. Kits express some adult behaviors, but require a long period in the family to develop their dam construction skills, and other abilities required for independent life. [41] Diet [ edit ] At one time, 25 subspecies of beavers were identified in North America, with distinctions based primarily on slight morphological differences and geographical isolation at the time of discovery. However, modern techniques generally use genetics rather than morphology to distinguish between subspecies, and currently the Integrated Taxonomic Information System (which provides authoritative [30] taxonomic information on plants, animals, fungi, and microbes of North America and the world) does not recognize any subspecies of C. canadensis, though a definitive genetic analysis has not been performed. Such an analysis would be complicated by the fact that substantial genetic mixing of populations has occurred because of the numerous reintroduction efforts intended to help the species recover following extirpation from many regions.

Comparative Mammalian Brain Collections: North American beaver (Castor canadensis)". neurosciencelibrary.org. Archived from the original on October 5, 2016 . Retrieved March 8, 2020. Nelson, E. W. (1927). "Description of a New Subspecies of Beaver". Proceedings of the Biological Society of Washington. 40: 125–126. Archived from the original on July 31, 2017 . Retrieved February 21, 2018. Goldman, E. A. (1932). "A New Beaver from Arizona". Journal of Mammalogy. 13 (3): 266–267. doi: 10.2307/1374004. JSTOR 1374004.Goldfarb, Ben (2019). Eager: The Surprising, Secret Life of Beavers and Why They Matter. White River Junction, Vermont: Chelsea Green Publishing. ISBN 978-1603587396. Donald G. Reid, Stephen M. Herrero and Thomas E. Code, "River Otters as Agents of Water Loss from Beaver Ponds," Journal of Mammalogy, February 1988.