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. Three templates for service dog letters from healthcare professionals, covering the types of letters service dog users may legally need.Sign your application and drop it in the mail to Working Dogs For Vets. Then give it a few days and give us a call at 843-647-4357. This publication provides guidance on the term "service animal" and the service animal provisions in the Department's regulations. If you're in Maryland and considering getting an ESA Letter, this comprehensive guide will walk you through the process. For Maryland residents, the first step to obtaining an ESA letter is to meet with a licensed mental health professional (LMHP) who can work in your state. A pet care agreement is a formal contract that defines the terms of pet-sitting services between the pet owner and the pet sitter. They are not pets since ESAs and their owners need to be officially recognized. My therapist agrees with my use of a service dog, but if she's not legally able to provide me with a letter, who do I turn to?