A documentary film produced by a Westport native about the practices of puppy mills will be broadcast this evening from 8 to 9 on HBO2.

"Madonna of the Mills," a film about a Staten Island woman's work to rescue puppies from Pennsylvania breeders, was produced by Kelly Colbert, a Westport native who has provided foster care for puppy-mill dogs through Rawhide Rescue, HBO said.

In a news release, HBO claims 99 percent of puppies sold in U.S. pet stores come from puppy mills, and nearly all have parasites at the time of their sale.

The film chronicles the work of an animal-rights activist as she drives through rural Pennsylvania from puppy mill to puppy mill, HBO said. It features interviews with other animal-rights activists, including, Karen Rasmussen, a reasearcher at the Westport Coalition Against Puppy Mills.

Although the practice of mass-breeding puppies under inhumane conditions is illegal, HBO said, breeders continue to thrive under lax regulation.

Other HBO2 broadcast dates for the film are: Aug. 28 at 1:30 p.m.; Aug. 29 at 11 a.m.; Sept. 5 at 9 a.m.; Sept. 10 at 1:30 p.m.; and Sept. 23 at 8 a.m.