From over 100,000 films, discover the handful you'll love.
Free or premium access to the world's largest documentary library.

How Animals Got Butts
Synopsis
The evolution of the butthole in animals, including starfish and earthworms, reveals significant insights into anatomical development and classification as deuterostomes and protostomes.
Synopsis
The evolution of the butthole marks a crucial development in animal anatomy, influencing classifications within the animal kingdom. Species such as starfish and earthworms exemplify this evolution, categorized as deuterostomes and protostomes, respectively. By examining these distinctions, the episode from Eons, produced by Complexly for PBS Digital Studios, highlights the broader implications of anatomical evolution across diverse life forms, providing insights into how these adaptations have shaped survival and reproductive strategies throughout history.
What are people saying?
Play More Like This
Where else to watch
Browse more like this
Related Films
Is this your film?
If you made this film or hold the rights to it, we'd like to talk. We can license it and pay you a share of what it earns.
























Comments