For my Jersey/Lowline angus cross cow, I've been wondering how big a bull I could breed her to. She's smaller (45 inches at the pin), but supposedly the Jersey in her favors easier calving? I was planning to breed to Lowline angus, but was wondering since semen is more available, if a standard angus rated for calving ease would be okay for what will be her third calf. I don't know if there are different sizes of angus amongst the standard sizes. Now for the second part. (I'd better be careful, as my wife doesn't always appreciate me comparing her to cows) It seems cattlemen worry alot about calving ease. I started wondering why the same doesn't apply to humans. I see 5 foot tall women married to 6-5 men who are huge. Are you ladies ever warned about marrying big guys and having birthing problems? What's the difference between this and cattle?