New Jersey Statutes Title 2A. Administration of Civil and Criminal Justice 2A § 42-111

a. A landlord shall have the right to promulgate reasonable written rules and regulations, in accordance with the provisions of this act, relating to the care and maintenance of domesticated animals by senior citizens, except that a landlord may not require that the domesticated animal be spayed or neutered. All such rules and regulations shall be transmitted, in writing, to the residents of each dwelling unit in the senior citizen housing project and shall be incorporated within each lease upon its subsequent renewal and the master deed and bylaws, as the case may be.

b. A landlord may require that a senior citizen remove from the senior citizen housing project any offspring of his domesticated animal within eight weeks of their birth; except that, the landlord may require their removal at an earlier date if the offspring of that domesticated animal may be so removed without unreasonable danger to their health.