One Free Walk or Petsit for New Clients! Forms. We require all clients to complete the following forms.Free online form template for dog walkers. Easy to customize, embed, and fill out on any device. If you are a new client, in order to receive dog care from Tail Wag Walkers, please fill out and submit the following Intake Form. We will be in touch soon. A dog walking contract should outline the dog walker's major responsibilities and the process for carrying those out. Included are Dog Walking Contracts, Pet and Owners Information Sheets, and Veterinary Release forms. All three forms are required when taking on new dogs. Navigating Dog Walking Tax Forms and Filing Quarterly Business Taxes.