Crazy enough I am actually familiar with the story from a college class that seminared on the evolution of non-reproductive sex. One group talked about interspecies intercourse with various other stories and mythologies where characters transform into animals and fuck, and used Bear as a modern example.
I remember it because it was the more audacious presentation until the guy after me argued dinosaurs were gay and physically challenged disagreement.
If I remember the argument: homosexual behavior can be identified in both species descended from dinosaurs as well as in species that appear to have evolved significantly separately from them, indicating if homosexuality is an inheritable trait then dinosaurs were a gay common ancestor.
I can't quite remember the link they made but I remember I found the argument more valid for obligate nonreproductive members of a species evolving but not necessary homosexuality in and of itself.
Alex Jones would've liked that class to be honest.
Please put an NSFW tag on this. I was on the train and when I saw this I had to start furiously masturbating. Everyone else gave me strange looks and were saying things like “what the fuck” and “call the police”. I dropped my phone and everyone around me saw this image. Now there is a whole train of men masturbating together at this one image. This is all your fault, you could have prevented this if you had just tagged this post NSFW