I do not have sheep yet, but am considering acquiring a pair. I have three quick questions: First, are sheep susceptible to ticks? We are currently battling them on our dogs. Have gotten some baby guinea hens to take care of the problem, I hope it helps. But I don't want to bring in any other tick susceptible animals just in case. Second, I am wondering if anyone knows which breed of sheep are best as pets. I read about some once, but can't remember what they are called. They said they are more sociable with humans. Otherwise, which sheep are the smallest and which sheep are the most hardy as far as easy to care for? Three, we live in the country on 5 acres, but I'm not sure my husband wants to fence it all in. Our backyard is fenced in (about 1 acre) with welded wire fence. How many sheep would that support, and would it get too poopy (since it is a yard)?