It depends on the buyer, and the types of dogs! A couple with very small children might be a little skittish about buying a house next to somebody who had 5 rottweilers for instance - just because of the reputation of the breed. I happen to love rotties myself.

It also depends on if the yard is kept clean and if the dogs are kept indoors or out. Somebody who knows a little about dogs might not want to buy a house next to someone who keeps their dogs outdoors all day where kids can poke at them with sticks and make them mean.

So - it all depends!