| http://www.w3.org/ns/prov#value | - Many zoos struggled with animals that demonstrated pacing, swaying and other repetitive behaviors, sometimes to the point of self-injury, that are thought now to be caused by boredom or stress.Vecchio and his colleagues began using what they had on hand, such as newspapers and plastic garbage cans, to keep the animals occupied and try to reduce those behaviors, called stereotypies.
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