Stallion - Wikipedia - Stallion penis
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A stallion is a male horse that has not been gelded (castrated). Stallions follow the . Stallions have a vascular penis. When non-erect, it is quite flaccid and contained within the prepuce (foreskin, or sheath). The retractor penis muscle is relatively. The stallion's testes are normally ovoid (like a walnut) in shape and .. When not erect, the stallion's penis is approximately 50 centimeters in.