I have a little Paint filly that will be turning 1 year on May 13, 2008. She is currently pastured with a mare (who goes into heat very often) and a 4 y/o gelding (who I believe was left to bred before we got him). The gelding is very "studly", often grunting or squealing at the mares and other studly acts. I noticed when I worked my filly last night that she is "squirting" (sorry for the foul language! Didn't know how to say it any better), and looks like she is in heat. I have never heard of this before - when I worked at a cutting ranch, we would often leave the colts in with the fillies until they were over 1 year, with no accidental breedings. Has anyone else run into this problem? She is as obnoxious as my 15 y/o mare when she's in heat! THanks much in advance!