<p>Two rearing stallions appear locked in a combative embrace as they battle for the right to mate with the mares of a wild herd.</p> <p><a href="http://shop.nationalgeographic.com/ngs/browse/productDetail.jsp?productId=6200725&amp;code=NG90399" target="_blank">Purchase the National Geographic book <i>Deadly Instinct</i></a></p> <p><a href="http://national-geographic.cafepress.com/art/s_1200520?ref=phosite" target="_blank">Buy a print of this photo</a></p>

Wild Stallions

Two rearing stallions appear locked in a combative embrace as they battle for the right to mate with the mares of a wild herd.

Purchase the National Geographic book Deadly Instinct

Buy a print of this photo

Photograph by Melissa Farlow

Deadly Instinct

See pictures from the National Geographic book Deadly Instinct.

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