Dogs are mostly NOT allowed in children’s playgrounds unless otherwise noted. This decision varies from one playground to another, and an exception is usually made for service animals or assistance dogs. Due to the risks of allergies, infections, and biting, most playgrounds prohibit dogs inside the playground by posting No Pets in Playground Signs. However, if it is allowed, there are certain requirements set for dog owners, like keeping the pet on a leash, cleaning up after them, and always supervising their act. For example- Arizona requires that a dog be "physically restrained by a leash, enclosed in a car, cage or similar enclosure" at a public school or park ( A. R. S. § 11-1012 ).