I will say that both of these geldings seem quite "attached" to me. The Arab is my horse, and my usual mount, so I have spent and do spend a lot of time with him. We became very close last year when I nursed him back to health after a serious injury. Sam is a horse I owned for many years and have always had a very strong connection with him. I just recently found him again after about a 4 year absence and he clearly remembers me. When I ride one, the other seems visibly jealous, following me around and even sometimes trying to knock me off the other horse.
So what is this behaviour about? Are they trying to establish who is dominant after being together for 3 months? Are they just being silly boys, fooling around for some fun and exercise? Are they trying to impress the mare? Are they jealous (or can they experience jealousy)?
Does anyone have any insights? Should I be concerned about the "sparring" escalating to full blown fighting?