I have a "dog in yard" sign they didnt have one for "dogS" lol but most people can tell right away we have dogs in the yard, we got the sign because when we had Shadow she was sually hiding somewhere in the yard, and rather then only be outside for a few minuts she liked to stay awhile, because couldent see her so they would just walk in the yard, and of coarse Shadow would leap out in front of them and "hold" the person in one spot till we assured her the person was allowed to be there.