Robyn this might be a bad idea. Another big dog, you don't know it's temperment with children or maybe you do but a strange dog may not be as tolerant as yours is with the kids. It could pose a threat to your dog and he may become territorial.
Just my opinion but I just don't trust strange dogs with kids. When I worked for the vet part time people would come in and say oh he's fine you won't have any problem with him and the next thing you know we need the big gloves and a catch pole just to take it's temp. LOL

