My goats are always copper deffecient. They are completely black and turn a rust color and then I give them a copper plus and it goes away. Right now they have really nice black coats with no rust color at all. However their tails are looking a little bit like fishtails. I figured it was just their winter coat shedding. I normally go by their coat color. I'm thinking I might need them on a regular every 4 months schedule. Instead of just whenever their coats are rusty. It's been about 5 months since their last copper bolus. Should I dose them? Or is this not a fishtail? I'm thinking maybe bc it's summer their coats are growing slower so that's why I haven't seen any rust color yet. Pictures are attached. Thanks!!!