Unfortunately I spent two years finding the answer for this. I used him again this year and hopefully will have more success. My criteria would be smaller framed soggy cows preferably black or a solid red. He will paint up calves some times and he can throw every color under the sun. I have loved the calves from the beginning since they are stout and grow well but its hard to sell a brown or grey calf. There are those who talk about his birthweight being on the heavy side but as of yet all are under 100 lbs. <cowboy>