A high-profile supporter of Missouri's is meeting with lawmakers to discourage them from repealing the voter-approved initiative.
The law limits the number of dogs a breeder may have and how frequently they can be bred. It also requires animals be provided veterinary care and given outdoor access.
The was among several groups backing it. Humane Society president and CEO was meeting with Missouri lawmakers Wednesday to discuss his organization and the new law.
Pacelle says the Legislature should respect voters' will.
Legislation has been filed to repeal the law, which critics say could make it harder for legitimate dog breeders to stay in business.