Use the following links to access resources about Canis dirus. The same species lived on the west and east coast, so you can use these resources for either/both.
Quick Facts - Florida Museum of Natural History
Canis dirus - Natural Worlds
Wolves, Coyotes, and Dogs (Genus Canis) - Illinois State Museum
Tooth wear and skull shape as indicators of food stress (scientific paper)
Bite force comparisons of extinct mammals (scientific paper)
Quaternary record of Canis dirus in North and South America (scientific paper)
Dire wolf - Wikipedia