English: Segment #1 shows typical haloperidol-induced vacuous chewing movements in a wild type mouse. Occasional, brief vertical jaw movements are observed. The next segments show six different capuchin monkeys still exposed to a maintenance intramuscular weekly dose of antipsychotic drug when the videoclips were captured. The phenomenology of the purposeless movements includes variable orofacial, axial, and foot dyskinesias, at times admixed with mild dystonic features. The animals are otherwise in good condition and able to feed, groom, ambulate, and interact with peers.