This is a very specific thread, so those who are experienced dog owners would be best in answering this. I live in a very bad part of town, with soon to be only my dad and myself, and lately, my dad and I have been entertaining the thought of getting a dog for possible protection while I'm alone in my house. I'm a homeschool student (a junior to be exact), and am gone for only a period of about three hours, two times a week, so I figure I should have a lot of time to train a puppy if I get one. I understand the responsibilities of having a dog, so I'm trying my best to get a dog that would fit well in my household, as I don't want to get a breed of dog that's too much for me to handle, and end up spoiling the dog because of it. These are some of the things I'm looking for in a dog... As I said, I hope to be able to get a breed of dog that would do well as protection. A medium sized dog preferably, maybe around rottweiler sized, and a dog that isn't too high energy. My dad and I don't do a lot of going out, and I am not a naturally active person, so unless I exert myself to try and satisfy an energetic breed's needs, a more tame, though playful breed would be nice. Again, this is my first time owning a dog, so a dog that a new owner could adapt to easily is preferred. A breed that does well inside, with exception to being taken out for walks and the like, as my house doesn't have a fenced yard. And, last but not least, I hope to get a dog that could do well with smaller animals, such as cats. (I have a cat... Would raising a puppy with the cat be a smart idea? I don't want a breed that has a tendancy to be small animal aggressive!) Also, I live in the city, so a dog that does well in the city would be a help. I'm not looking for appearance. I'm looking for loyalty and trust, and a good sense of protection, mainly. It puts my dad at ease, leaving me here alone, to have a dog around that could help protect the family. Any breed suggestions would be appreciated!