Personally I think it is a good (and necessary) experience for children to be raised around dogs and cats (especially dogs). Dogs are just about the only animal that will give it's life for its master and family. You look into its eyes and there is something there, a soul if you will. Cats love too, but they are very different in their expression of it. Both will fight to defend its home, but a dog is much more certain, which is why they are the ultimate deterrent.