My gorgeous boy is 9 months old - at some angles I can see him looking more like a grown up cat but at others (and especially photos) he's still got that tiny kitten look about him.
He is so so active - plays for probably 8 hours solidly every day, but often more. He tends to get into bed at 10.30pm and when I wake up in the morning he's still there - then he's go go go charging around for hours on end.
So, when did your kittens become grown ups?!