Sexual

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 * American black bears are promiscuous: females may mate with more than one male and males with more than one female.
 * Males wander during the mating season, finding females by following their scent trails. A male may stay with an oestrous female for hours to a few days.
 * Males compete for females; generally the larger male chases off the smaller male; evenly-matched males may fight.
 * The female stands still to let the male mount from behind; the male clasps the female with his forelegs and gives a series of pelvic thrusts. Each copulation lasts just a few minutes