The animal cast eventually reached to 132 lions, tigers, leopards, cougars, and jaguars. There are several documented cases of cougars killing wolves. Humans are the coyote's greatest threat, followed by cougars and gray wolves. Wolves encounter cougars along portions of the Rocky Mountains and adjacent mountain ranges. American black bears do compete with cougars over carcasses. Predators recorded for jaguarundis include boa constrictors, cougars and domestic dogs. The Houston Cougars and the SMU Mustangs compete in the American Athletic Conference. He played college football for the BYU Cougars. There are no authenticated cases of truly melanistic cougars. Melanistic (black) cougars, another probable cryptid, have been noted by residents. Semi-pro teams included the Kansas Cougars and Kansas Diamondbacks football teams. Michigan played the Washington State Cougars in the Rose Bowl. There have sometimes been incidents of pet cougars mauling people. The zoo's two cougars were orphaned brothers. He was recruited by DeWayne Walker, then an assistant coach for the BYU Cougars.