In horses, there are distinct behavioral differences between intact males who have bred and those who have not. In the wild, the "spare" males live quietly in bachelor herds, while the breeding males act as protectors of the "women and children."

I'm suspecting that *being a band breeding male* actually increases testosterone levels. Which has implications for managing stallions. Many stallions will quite happily hang out with geldings and non-breeding mares during the winter and then become all studdy again in the spring.

If we can work out behavioral triggers we can actually manage stallions in such a way that when we need them to breed, testosterone levels go up, and when we need them to be quiet and work at a show...