So we have 2 geldings and a mare. We first got one of the geldings (Atlas), we had him for about 2 years and then we got the mare (Rosie), then 3 years after that we got the other gelding (Jack). Atlas and Rosie got along great and when we added Jack he was only 5 months old and Atlas was 15 years old.
As Jack has been growing he more and more is battling Atlas, not just biting or kicking, but rearing very high, bucking, chasing, biting and kicking. I am aware of why this is happening I know the typical dominance "who owns the herd" mentality, but I am getting worried that this is too much for Atlas, the now 19 year old 15h paint horse against Jack, the excitable 4 year old 16h Belgian cross Quarter Horse. Jack even picks up our jolly ball and hits Atlas with it (kind of funny to see, but not funny for Atlas).
We let Atlas do his own thing because he is 19 now. We love him and care for him, but he is not ridden nearly as much. Jack is at training right now, but when he comes back are we going to need to find a way to separate them? They are together in the day, but at night they are in their own stalls.
Thanks so much.