Horn from a female bighorn sheep (Ovis canadensis). Unlike bony antlers,which are shed each year,horns are permanent body structures made of the protein keratin. Bighorn sheep exhibit sexual dimorphism - female horns are much smaller than those of adult males | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Shields, Martin |
Taille de l’image : | 5019 px × 3360 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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