Photo de stock - Adult Rocky Mountain bighorn sheep Ovis canadensis canadensis just outside the boundry of Yellowstone National Park near Gardiner, Montana Bighorn sheep have double-layered skulls shored with struts of bone for battle protection They also have a broad, massive tendon linking skull and spine to help the head pivot and recoil from blows Horns may way as much as 14 kg, which is the weight of all the bones in a ram´s body The horns of a female are much smaller and only slightly curved

Photo de stock: Adult Rocky Mountain bighorn sheep Ovis canadensis canadensis just outside the boundry of Yellowstone National Park near Gardiner.

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