A place to purchase, and smoke, crack cocaine. The drug users that live there are called the animals of the zoo house. They live like animals, where they relive themselves in the same place they sleep. The zoo house is unclean, unsafe, and maybe be hazardous to your health. The zoo house is is run by the zoo keeper.
Stay away from the zoo house, or you will become one of the animals. Your life will be over, as you know it, if you vist the zoo house.