We have a cow, Beefmaster Charolais X, 9 years old, calved on march 5th. 2 weeks ago she started acting funny. She would lay down, and get up and walk around and lay back down, get up and kick her back feet at her belly like she had flies down there, and lay back down, get up, walk around ..etc. She was on rye grass so i was like, uh oh, i bet shes got grass tetany and the next day i ran her into a different field with some special pairs (a breech, an old cow, a premie) to keep an eye on her. All the cows had been getting plenty of minerals prior to this and the "special" pasture had a troughful of minerals too but she ignored those. anyway, this cow normally has pink teats but i noticed when i ran her in that they were discolored, brownish, but i assumed she had been lying in the mud, no big deal. well.. it is a big deal b/c her teats (all four) are now black and chapped and look like they are rotten. if youve ever seen a cow that has stepped on her teat and it sloughed off, it is colored like that. This cow had normal sized and shaped teats and all were functional prior to this though and the calf WAS doing great but i dont think shes nursed in a few days. i also noticed that she had lost some hair on the back of her bag today. Anybody know whats going on?