In the past, many cooperative housing providers prohibited pets. This policy resonated with its members who were tired of living next door to other members with barking dogs or caterwauling cats. Yet, federal and state law now require cooperative housing providers allow assistance animals. Assistance animals are animals which a disabled member may keep in a cooperative housing situation, as long as a medical provider is persuaded that the member needs the animal in order to overcome a specific disability and that the animal will ameliorate that disability.