恐犬

恐犬（）是恐犬亞科下已滅絕的動物，並且是該亞科的模式屬。雖然恐犬並非恐犬亞科中最大的動物之一，但牠有能咬碎骨頭的能力，比較大的上犬更強。

參考
*Xiaoming Wang, [https://web.archive.org/web/20060718022837/http://www.nhm.org/expeditions/rrc/wang/Carnivorephylogeny.html "The Origin and Evolution of the Dog Family"] Accessed 1/30/06.

其他資料
*Russell Hunt, [https://web.archive.org/web/20110926205607/http://darkwing.uoregon.edu/~rhunt/publications.htm "Ecological Polarities Of the North American Family Canidae: A New Approach to Understanding Forty Million Years of Canid Evolution" (Accessed 1/30/06)].
[https://web.archive.org/web/20070320023028/http://www.nhm.org/expeditions/rrc/wang/documents/Wangetal1999borophaginemonographpart1.pdf Wang et al., "Phylogenetic Systematics of the Borophaginae (Carnivora:Canidae)." Bulletin of the American Museum of Natural History*, No. 243, Nov. 17 1999. (PDF) (Accessed 4/11/06)]