It's deeply unnerving for Bucky to see Steve drop to all fours as if he belongs that way, and he has to resist the urge to tackle him out of the way of the giant wolf that looks as if it could literally bite him in half on a whim. Whatever this is, it's way beyond his understanding.

Fenris observes the mortal and sees the changes wrought in him already, but he makes no outward judgement as to whether what he sees pleases or displeases him.

"A mistake, not an accident. A hasty judgement in a moment of frustration, one that I expected to cause a death and not the growth of a pup."