I was looking at this post and saw that someone had commented on how they liked how in the animation, the knots swelled. I asked a bit about whether this had a tag called knot_swelling (I do remember seeing it on some posts) but didn't get an answer, and was afraid to add the tag myself in fear if violating any rules.
Was this ever a tag and if so why was it removed? And if I can, can I add it back to posts and have a wiki page on it made? Because I love animations where the knot swells. Also doesn't this naturally occur in canines in real life when they climax? And why when they climax, instead of the initial rush of blood gorging it to full size?
Updated by SnowWolf