For example, intact males constitute 80 percent of all
dogs presented to veterinary behaviorists for what formerly has been described as dominance aggression, are involved in 70 to 76 percent of reported
dog bite incidents, and are 2.6 times more likely to bite than neutered
dogs, while
unspayed females «
attract free - roaming males, which increases bite risk to people through increased exposure to unfamiliar
dogs,» and «contribute to the population of unwanted» and potentially aggressive
dogs (Gershman et al., 1993; Sacks et al., 2000; AVMA, 2001).