Golden Retrivers are really good with other dogs and kids, but they are so popular and have been so heavily over-bred that the breed has a lot of problems. If you get a Golden, Be sure that it is coming from a good breeder and not a puppy-mill.

Personally, I would recommend a Pembroke Welsh Corgi because they are the best dogs I have ever seen around other dogs and children. They are very tolerant and sweet, they love to be around people and they "aim to please". It does take a very firm hand because Corgis are so much like children. You give them and inch and they'll take a mile. Do some research and find a good breeder for whichever dog you decide to get.