we have 18 cows, and I would venture to guess that we lose one a year.. some do get stepped on since they just love hanging around the manger when the cows eat, we try to keep them away... but good luck... we've had some years where we've lost 3, with a couple close calls as well.. we had one cow knock off after having twins about a month ahead of time, we ended up giving them to the neighbor who calves out earlier, he had some wet cows as surrogates.. this year we would have lost a cow and calf had we not been there, a heifer with a 110 lb calf, hind legs first.. my old man and I had to pull with everything we had in us to get it out... we do have some bad years... and put it this way, we've been trying to get up to 20-25 head since we started with 12 cows in 1991... the next spring we lost 2 cows, 3 calves, and another two cows we weren't going to keep... the next year we had scours, lost 2 calves, then had an atypical pnuemonia hit us the following couple years that claimed about 5 good cows, we had some with bad hooves, they got culled, bad udders got culled, tendency to prolapse.. culled, and then there are the ones who can't stay in our side of the fence, or that want to kill us when we go around them, they end up going too.. I am certain I would find it depressing to look in our records and count how how many losses we've had in 18 years