Cats in Massachusetts, United States: rules and travel
Dogs over 6 months are licensed by the city or town, dogs and cats need rabies shots from 6 months, owners are strictly liable for damage, and towns may not regulate dogs by breed.
Cities and towns issue licences and add leash rules.
The national rules for United States apply here too. National rules
Keeping rules
Rabies: cats 6 months or older, same rule (c.140 s.145B).[1]
Laws change: this is general information, not legal advice. The authority linked on each line has the final word.