N.H. Rev. Stat. § 436:102
It shall be the duty of each veterinarian, at the time of vaccinating any dog, cat, or ferret, to complete a certificate of rabies vaccination in triplicate which includes the following information: owner's name and address, description of dog, cat, or ferret (breed, sex, markings, age, name), date of vaccination, rabies vaccination tag number, type of rabies vaccine administered, manufacturer's serial number of vaccine, and the expiration date of the vaccination. Distribution of copies of the certificate shall be: the original to the owner, one copy retained by the issuing veterinarian and, within 40 days of the vaccination, one copy to the town or city clerk where the dog, cat, or ferret is kept. The veterinarian and the owner shall retain their copies for the interval between vaccinations specified in RSA 436:100. A metal or durable plastic tag, serially numbered, shall be securely attached to the collar or harness of the dog. Whenever the dog is out-of-doors, off the owner's premises, and not under the control of the owner or handler while working the dog, the collar or harness with the vaccination tag shall be worn. For the purposes of this section, "working the dog" means a dog doing a defined functional canine activity with its owner or handler such as hunting, field work, drafting, and guarding, working, or herding livestock, as defined in RSA 21:34-a, II(a)(4), or participating in any lawful competitive event, including, but not limited to, conformation shows or obedience trials, field trials, agility events, hunts, sled races, or training activities pertinent to functional canine activities. Cats and ferrets shall not be required to wear the collar or harness with the tag.
RSA 436:102
1985, 72:1. 1990, 17:1. 1992, 250:5. 1994, 353:1. 1995, 202:6, eff. June 12, 1995. 2006, 11:4, eff. Mar. 3, 2006.