Like the sassabies, hartebeest produce quiet quacking and grunting sounds. When Popeye walks out, he is seen with the ducks, quacking. There, males chorus, emitting duck-like quacking sounds. It has been described sounding like duck quacking or exaggerated, sneering laugh. The shot of a duck quacking was lifted from "I'm a Monkey's Uncle". Outside of Disney, he also animated "The Wise Quacking Duck" (1943) for Leon Schlesinger Productions. The mother crocodile makes a quacking noise, causing her babies to accept her after all. A living, breathing, quacking meme. Roger gets upset at his father and does not see any problem with the quacking. Quaq Quao becomes slightly subdued, and he once again responds by quacking.