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Mother giraffe and calves feeding. It is mostly the females that raise young, and they may gather in
Administration of abdominal thrusts (the Heimlich maneuver) to (A) a conscious victim and (B) an unc
Gorillas live in one-male or multimale groups, from which females emigrate at sexual materity.
Risk-taking behavior by young males.
Although males tend to be larger than females, the two overlap significantly in size. The size of a
Functional MRI Scans These scans of human brains show localized average increases in neural activity