More and more men identify with terms such as stag and cuckold. The roots of this fantasy may be connected to human biology.
Searches for seeing your wife with another man have grown dramatically. Some husbands ask for every detail and become aroused while listening. How can this trend be explained?
What is the origin of cuckolding? Biology explains it all
To understand why another man may have sexual privileges with a wife, we need to look at biology.
The answer is in our genes
Like wolves, our ancestors had a rigid hierarchy. The male recognized as leader became alpha, protecting the family and having reproductive priority. The betas competed for opportunities when the alpha was absent.
The cuckold as an alpha male
An alpha becomes one when his group recognizes him. The dominant man who wants to share his wife is called a STAG; he is aroused by her pleasure without seeking humiliation. Many men dream of turning their wife into a hotwife.
The cuckold as a beta male
Other men experience the beta role and encourage their wife to choose an alpha. The lover or bull may be chosen for size, sexual stamina, an athletic body and other traits.
A natural arrangement
Instinctively, the husband accepts encounters between his wife and her bull. Jealousy and conflict must be handled, but many cuckolds find the arrangement “strangely natural” and take a different role.
The king of the hive
In a “pornified” culture, the woman is desired by other men while the stag knows he is still her “owner”. The fantasy can increase testosterone and arousal. The phenomenon is discussed in this article from El Confidencial.
Fantasy made real: greater intimacy without giving up commitment
Intimacy between the cuckold and his wife may grow even as her encounters with lovers increase. Commitment remains while the couple’s sexual boundaries expand.
The importance of penis size in the cuckold fetish
Size, shape and thickness can provide stimulation. The glans could displace previous semen and “clear the field” of competitors.
This increased libido is presented as a consequence of sperm competition. This does not mean women consciously think this way.
Conclusions about the origin of cuckolding
The origin is triggered by biology and behaviours encoded in our genes. The reptilian brain helps explain these impulses. Thus, nothing seems more exciting than “reclaiming” your wife after watching her enjoy a skilled bull.
Happy cuckolding!
Dr. Cornudo
Last updated: March 2026.