Proud-cut colts are indeed ones in which some part of the relevant
anatomy is left behind--however, not the vas deferens (it goes all the way up
the "cord" and is literally just a tube, hence no hormone-producing
capabilities) but rather the tail of the epididymis, which is attached to the
testicle by a ligament, and which can easily pull loose and be the length of
the testicle away from the testicle as a result. The old cowboys call it
"the button"--you've got to get "the button..."
I haven't found the start of
the thread on proud cut, so I may be way off base, but if you only look at a
colt's behavior, not his ability to breed, isn't it possible that it is
related to his pituitary gland output? Do I have that right,
Heidi?
