Wild Beasts (1984)

All hell breaks loose in the zoo of a German metropolis when the local drinking water gets contaminated by a large quantity of PCP, thus turning all formerly harmless animals into ferociously aggressive beasts. Crazed by a drug-induced blood rage, they break all barriers and soon enough prey on the unsuspecting population of the town. Now it's up to a ballsy scientist and a spunky reporter to save the day and the city.