I have no experience of keeping ferrets, but we have reptiles for pets, and they don’t have a lot of personality compared to the catz or the byos.
C.S. Lewis is incorrect in identifying “you” as the soul inhabiting the body. “Man is a creature composed of body and soul, made in the image and likeness of God.” The soul and the body compose one integral creature, and one integral creature will live for eternity.
But I think ole Clive Staples was addressing the error that the body has primacy.
Cheers!