Owner-supplied equipment, including a collar, leash, and any other needed restraints, such as a muzzle. (2) allow a dangerous dog to leave the owner's real property unless the dog is leashed and muzzled, or is otherwise securely restrained and muzzled.Maryland's service animal law applies to guide dogs, signal dogs, and other animals that are individually trained to perform tasks for people with disabilities. Service animals whose sole function is to provide comfort or emotional support do not qualify as service animals under the ADA or in Maryland law. Failure to adhere to Dog Playground Rules my result in the revocation of park membership. 1. (ii) for use in a deliberately conducted event that uses a dog to fight with another dog. In the same field, I found a rusty side lock from an ancient muzzleloader.