The tail grabbing hurt to watch tho... Because the tail is part of the spine, so just imagine someone pulling on your spine
the tail grabbing is just a substitute for hair grabbing tbh it's not that deep soo yea ^^
Honestly we don't know and I highly doubt the author would go full lengths with animal transformation , Don't think they are connected but it's more like hair pulling with context it can be a turn on.
Plus, the author has already made it clear that their tails (and ears) are erogenous zones.
the tail grabbing and the knotting incredibly hot