Ok, I know I should know this but I don't. How do you determine when a cow is in heat? We've got a bull/steer (he's cryptorchid--we never castrated him but he's got absolutley nothing there) but he never shows any interest in our cow. I know if you've got other cows that they will mount the one in heat, but if you don't have other cows (or at least none that are interested) then how do you tell? We also have a 6 month old heifer calf, but I'm assuming she is too young to help us determine heat. When the previous owner had her bred for us she always knew when she was in heat. Are their behavioral signs I need to be watching for, or some specific anatomical sign? This Dexter cow is loud and obnoxious alot (like most of the time) and I haven't really noticed a pattern. I've found a bull for her but they don't have any way to house her so we just need to bring her to visit for the day and then take her home.