ナショナルジオグラフィックのインスタグラム(natgeo) - 7月17日 01時15分

Video by @Joel Sartore | This timber rattlesnake hasn’t fully assumed an attack stance, but it’s safe to say it was not thrilled to be the subject of my camera lens. In the wild, most individuals are docile and will remain motionless, striking only as a last resort. However, males of the species do have an aggressive streak, particularly toward one another. During periods just before mating season, males will engage in ritualized fighting, wrapping themselves around each other and swaying back and forth in an attempt to pin each other down. Video taken at @vervebiotech in Boston. To see more species featured in the Photo Ark follow me @Joel Sartore. #WorldSnakeDay

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