Wild Beasts - Belve Feroci 1984

Rupert Berner, a scientist, works at a huge zoo in a German city. He and his girlfriend walk through a laboratory filled with animal cages, discussing their behavior. Meanwhile, pesticides and other harmful chemicals enter the zoo&sewage system. Through a series of unlikely events, the animals manage to escape and make their way into the city. There, they unleash a frenzied attack on civilians, causing widespread chaos...