Richard Lydekker, 1911 Encyclopædia Britannica, Volume 7… (1911)
“ Ranging from Canada in the north to Guatemala in the south, and chiefly frequenting the open plains on both sides of the chain of the Rocky Mountains, the coyote, under all its various local phases, is a smaller animal than the true wolf, and may apparently be regarded as the New World representative of the jackals, or perhaps, like the Indian wolf (C. pallipes) , as a type intermediate between wolves and jackals. In addition to its inferior size, the coyote is also shorter in the leg than the wolf, and carries a more luxuriant coat of hair. ”
