What the heck??? I had an 18 month old black bull semen tested last week. About 2 days later the front two teats on this bull became swollen and SUPER pink (back two teats are black...and I assumed the two front ones were too, but can't remember ever looking). Swelling was about 2" long and 1" dia. I called my vet who never heard of such a thing. We are thinking it is a hormonal reaction...bull's first time to ejaculate. Has anyone out there ever seen this??