Found-lost dog

Here she is-my new dog. Beware-at first glance she appears to be as cute as can be, but let me tell you when she opens her mouth it sounds like someone is holding onto the sides of a balloon and letting the air screetching out. Dad found her this week wondering in the pasture, with the cows and the llama, miles away from the nearest house and away from the highway. She is not a young pup either. She has a bit of gray hair and shows signs of having been trained. She (I keep refering to her without a name because she doesn't have one-any suggestions?) can sit, gets down off my pants when I tell her too, doesn't come in the house if I remember to tell her to stay out, stops barking when I tell her to stop (funny how she is not just naturally good, she has to be told to be told what bad habbits to stop). She also walks right beside and behind me when I go to get the mail (that is my favorite thing because I hate a dog that is always running into me and between my feet). I might actually eventually maybe even like her. I'll keep you posted.