Humping dogs
What do you think about the directors choice to showcase two dogs suck together in a case of Bulbus Glandis?
This swelling of the penis is located toward the rear end of the os penis. As soon as the male dog inserts his penis into the *****'s vagina and begins to thrust, the bulbus glandis enlarges to a firm spherical shape, resulting in the so-called "coital tie." This tie prevents the male dog and the ***** from separating immediately after ejaculation and may last from 5 to 60 minutes.
Personally, I think that really tied the whole movie together.