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HMR behavior of wild giant pandas. (A) Images of HMR behavior captured by an infrared camera at the same spot. Horse manure (indicated by dotted line) was accumulated from the first day to the third day (Top row). A wild QIN panda exhibited HMR behavior on the seventh day. The ambient temperatures and behavior duration are shown. (B) Schematic diagram summarizing the processes and characteristics of HMR behavior.
