OKLAHOMA CITY -- Think it's hard for firefighters to rescue a cat in a tree? Try a cow in a swimming pool. Firefighters in Oklahoma City were summoned Sunday after a homeowner reported hearing a "snorting" from his swimming-pool area. Emergency responders found a hole in the swimming pool's liner and a cow trapped in the water. Oklahoma City Fire Department battalion crews brought in a wrecker to hoist the nearly 1,500-pound animal from the pool and to safety.