They knew she had the usual pets -- like rabbits and birds. But they didn't know about the poisonous snakes. Police in Cincinnati say one of them proved deadly for a 44-year-old woman, who has died after being fatally bitten by a viper. Zookeepers helped police search Alexandria Hill's home for the more venomous and exotic of the creatures. An ambulance waited outside in case a venomous viper attacked. The group found more than a half-dozen big lizards running around a bedroom, along with venomous snakes in secure plastic cases. Police believe a pit viper bit the woman Monday. Neighbors say she drove herself to the hospital before dying yesterday.