Chihuahua dog left out in zero degree weather by neighbor who had taken it in as a stray but would not allow it in house. I was feeding her much larger dog when I realized the Chihuahua was still in the back on the doghouse and now was very underweight. Her son carried for me and I have it in my basement. Paco is eating well but still underweight and needs a better home than I can provide - my fence is inadequate and I rescue cats and have a house full of cats. However, Paco when brought up into the house tolerated cats well. He appears to be pure bred.