Sammy the Hamster

Over The Hedge 2
Sammy the Hamster was born after the events of the movie by Linda and Lasumina, as shown in Boomerang Adventures 2. He was 22 seconds old the first time he was shown.

Over The Hedge (TV series)
He was a newborn, introduced in season 12 (2008-2009), and he was a small hamster who liked playing with ribbons.

Over The Hedge Rivals
He was a 6-month-year-old, who had a small rolling cart, a ribbon toy, a tugging bunny and a hamster TV (model HAMSTER700a, 1992). He has been in 25 episodes so he hasn't really aged that much (5-7 months). His 26th episode is planned for Feburaury 15, 2014.

Over The Hedge 3
He was 10 months to a year old, and had a new TV (model HAMSTER750b Pro, 1995)