Kusanar
Loving the herd life
I'm not really sure that's true. I have a stallion that acts no differently around me no matter the time of the month. and I have read but not actually researched that the pheromones are different between species at least so far as females go. Males apparently do produce the same general pheromones between species when they are being aggressive and I assume in breeding mode.This is a new one on me. First thing that went through my mind, are the ewe in heat? Estrus is estrus and the smell may be making him misbehave.
A guy that we used to get hay from had cattle. he got a jack donkey to protect the calves. Wrong. When the cows came in heat, the jack attacked the bull for trying to breed them. He chased the cows, biting and kicking them. Needless to say, that jack got hauled to auction.
It would not surprise me that a jack that was put in to guard cows would react badly to a hormonal male coming bellowing into the field and "attacking" the cows. My dad used to drive dump trucks and had a bull attack his truck because they spooked the cows, farmer had to come out and rescue the truck.