You feel your limbs shrinking, while you were on all fours, and became the same length as the wolf that was sucking you off, while you began to feel your own teeth fall off, and be replaced with sharper canine-like teeth. Your face stretched out, and your nose became a bit darker, while you felt your tongue grew with it.
You feel your hands, and feet get longer, while your fingers shrank, and your nails broke, and claws grew in between them. You could feel yourself knot the wolf's throat, while you felt paw-pads grow on your hands, and feet. Your butthole began to pucker below your tail, while you became close to precumming, while the grey wolf let go of you. You haven't even cum yet, but you still wanted to, while your brain shrank to canine level, and the grey wolf moved to where you were, as it started to smell your butthole.