Alot of the mastiffs are good large dogs esp with kids. a lab is always a popular choice. but more important than breed are the individual dogs. and what you do with them and how your kids treat the dog. my biggest advice is going looking leave your money at home. so you won't be tempted to buy the first dog you see. and make an educated choice. Another factor is do you want to buy or rescue. and if you want to buy from a breeder how much do you want to spend. are you willing to shop locally or abroad. keep researching dogs you are going to get about 7,000 different types of dogs you should get from this website. remember dogs are dogs. they all have dog tendicies, like shedding drooling,digging barking, chewing, biting or nipping, soiling in the house. good luck on your quest to find your new buddy. and there is a lot of knowledge on this discussion board. a lot of people know what they are talking about here. most of us are very active in our dogs up bringing. so welcome to the forum and do not be afraid to ask questions. and remember we are dog people we are very passionate about dogs. so please if someone gets fired up take it with a grain of salt.