In the case of large female pythons, they can be quite selective when it comes to choosing a mate. Research has shown that female pythons tend to prefer larger males, as they are often more successful at stimulating the female and increasing the chances of successful fertilization.

The ball python (Python regius) is a popular pet snake species. During mating, male ball pythons will often engage in a "mating dance," where they entwine their bodies with the female and perform a series of muscular contractions to stimulate her.

In one notable study, researchers observed that male ball pythons were more successful at mating with larger females when they performed this dance. The study found that the male's body size and the duration of the mating dance were significant predictors of mating success.