My 9 year old daughter loves nothing more than a cuddle up with her Dad when she gets home from school. She'll know herself when she's too old and so will her Dad, if it still feels comfortable for them both then where's the harm? I think it's sweet :)
I think that it's okay for a 9 year old to cuddle with her dad. My husband is often gone months at a time because of his job as a nuclear operator and the travel that is required, and my daughter loves to spend time with him when he's home.
i cuddled with my dad until i was 11. nothing strange going o there.
Yes, it is quite normal and OK, assuming that the physical contact is appropriate.