What is the possibility of the vet missing "one" when he/she was gelding a horse? I swear Sonny acts more of a Stallion each day.
He is REALLY vocal...each time a mare calls out for any reason (yes only the mares) he will respond back at least 5 times.
The only time he "drops" is when he is close to one of the mares that he likes.
Maybe a gelding can act like that..but I've NEVER seen or heard of one acting like that.