I have been wondering for a little while about Hugo's age, when we adopted him in August, they said he was about four months old. I don't think they were right I think he is at least 1 year old. he is sort of active he goes in his wheel, but not really too active. He wont get up if I don't get him up. He will sleep to at least 2:30am as I am still awake. So I think I have an older hamster, I will always love my Hugo