She's quite a cow that's fer damnshure! 13 is about the age when they start to show it... before they come running, they'll look for a while to make sure it's worthwhile... We have had 2 cows make 18 so far, and for Rosie, I can say cow's eyes don't go bad with age.. her eyesight was 20/20 for a bucket!
I started clipping the cows undersides (er, uddersides?) when they were dirty before calving, and they started liking it, and I had good success with it helping them to get rid of lice, if I'd be able to do the whole herd (it would be a rodeo with some of them now still), I think I could pretty much eliminate the lice completely. One thing no one has explained to me is the difference between fleas and lice... When I talk to the cattle, I say 'fleas' and they seem to not care about terminology too much. I think clipping makes it harder for the lice to hold onto the short, straight hairs, and it's probably the same with the eggs. What I've noticed is the lice fall or jump off the cow when the skin temperature rises, which is right when they're in labour, and the first thing they give their calf is the lice off their muzzle when they lick it. Unfortunately for me and them, it's pretty hard to get a cow to cooperate when you want to clip her muzzle and cheeks.. Roma was an exception and stetched her neck out to help me with it.. and she hardly had a louse on her. Most common places I look for lice is the dewlap, between the shoulders, snout, and belly by the udder... If they don't have any there, they don't seem to have any anywhere else.