Every cat living in Massachusetts, whether they live indoors only or go outside too, must be vaccinated for Rabies.  Each cat should receive a Rabies vaccine by the age of 12 weeks and no later than 6 months which will be good for one year.  If the cat receives a Rabies booster before the first vaccine expires, which is before 365 days has passed, a 3 year certificate can be issued.  In Massachusetts, if the Rabies is past its year anniversary when it is boosted, only a 1 year certificate can be issued.  Any cat that is bitten or has a wound of unknown origin without a current Rabies vaccine must see a veterinarian for appropriate isolation and treatment.  Stay current on your pet's Rabies vaccine and save a world of worry.