Horse — Vajina

The outer portion of the vagina is called the vestibule. This area contains the urethral opening, where urine exits the body.

The is the external portion of the female reproductive tract. It consists of the two labia that meet at the midline. horse vajina

If this isn't the topic you were looking for, please provide more context or clarify your question, and I'll do my best to assist you. The outer portion of the vagina is called the vestibule

I'm assuming you're looking for information on the anatomy of a horse's reproductive system, specifically the vagina. Here's some information: It consists of the two labia that meet at the midline

The mare's reproductive system is regulated by a complex interplay of hormones that control the estrous cycle. The estrous cycle is the recurring physiological changes that occur in the mare's reproductive system, preparing her for breeding and pregnancy.