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Can bovid horns grow back after they are lost?
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bovid
American bison, or plains buffalo (Bison bison).
Bovid horns do not grow back if they are lost. Unlike the antlers of deer, which are shed and regenerated annually, the horns of a bovid are permanent structures.123
A bovid's horn consists of a hollow, unbranched sheath made of keratināsimilar to fingernailsāthat fits over a bony core extending from the skull's frontal bones. Because these horns are never shed as part of a natural cycle, they are not biologically equipped to regenerate if they are accidentally broken or lost. This distinguishes bovids from the pronghorn, which sheds its horny sheath periodically to grow a new one, and from deer, which undergo a complete cycle of antler shedding and regrowth.2314