Or, or, the male horses with nipples spent too much time poking their own nipples with their penis for sexual stimulation and it means they removed themselves from the gene pool.
This means male horses selected for less and less prominent nipples until they became completely flat chested.
Or, or, the male horses with nipples spent too much time poking their own nipples with their penis for sexual stimulation and it means they removed themselves from the gene pool.
This means male horses selected for less and less prominent nipples until they became completely flat chested.