For illustrious
No trigger needed BUT:
Lora works best when you DONT add words such as Penis, Canine Penis, Knot. These will more often than non result in showing a knot outside sheath or a knot with penis tip.
Adding only canine or large canine should be fine.
There is a trigger of knot in sheath but recommended not using. Can result in outside knots.
Best use with other furry base models.