Just noticed I have one. This heifer calf is growing remarkably well and fat as mud. Now I know why. I watched her stealing milk from three different cows yesterday. She's good. Sneaks in while another calf is sucking and uses it as a blind, or comes in from the back where the cow can't see. They run her off when they catch her, but she just comes back later. I guess I won't worry about it too much, yet. Nobody else appears to be suffering at this point. She sure does look good, though.