My sister and I have been trying to convince my parents to let us get a 3rd dog for about 4 months now. I think they are finally considering getting one , but I am trying to decide on a breed and gender I should get. So here is what I want in a dog. We are going to rescue from a shelter, so it may be a mix breed. We already have a 10 year old female lab mix, Sugar, and a 4 year old female chihauha/wiener dog mix, Sabrina. My lab HATES water and never fetches, people say that is very uncharacteristic for labs. My Chawiener loves playing fetch, but doesn't swim in our pond. We really want a medium-large dog. This dog MUST be nice to our dogs, cats, chickens, ducks, and pigeons. It needs to be nice to guests, but scare off trespassing people and animals . It should be able to defend our animals from predators. We live in a climate with extremely hot summers and fairly mild winters, so preferably a dog with a short to medium coat. We would like a dog that fetches and swims. It should be easy to train. During summer I will be able to spend every day with it, but when school starts I will only be with it from 3:30-10:00 in the evenings. Our dogs spend most of their day inside, but have to sleep in the garage because Sabrina has accidents at night and howls if we put her out without Sugar. We live on 5 acres in the country, and have a 1 acre area we fenced off for our dogs. I will walk it every day if needed, now I walk my dogs 2-3 times a week. I have never had a male dog, and I think it would be good to get one, but my mom thinks it will pee all over things. The dogs we have are fixed, and this new dog would be too.I love dogs, and just animals in general, and I am ready for the challenge of a new dog. Thanks for the suggestions.