Bestiality is illegal in many states and countries. What about
depictions of bestialtity in the form of drawings or artwork, where no
actual humans or animals are involved?

Artwork can be found to be pornographic, even if it does not depict actual events.

Thank you for your prompt response. I do need some clarification, even
as pornography, are there any legalities if the artwork is posted on
the Internet where the site id accessible only to adults?