Answer:
What has a spine, tail, and leash but isn't a dog?
Hands she has but does not hold, teeth she has but does not bite, feet she has but they are cold, eyes she has but without sight. Who is she?
I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
Small and bearded, both in the real world and in stories.
Taking this from a baby is said to be quite easy.
Born in the ocean and white as snow. When I fall back to water I disappear without a trace.