User blog comment:TeamTaycobSoDealWithIt/Collin & Brady in Breaking Dawn?/@comment-4054533-20110912191908/@comment-128.123.112.242-20111024204827

They aren't stuck in puberty forever. Yes, the wolves don't get old but that doesn't mean they don't age. When they phase they physically age quite a bit so even though they are 13 years old Collin and Brady might look 16 or so. As they get older they will age some but they don't get old as long as they are phasing. Sam appears to mid 20's so I'm gonna guess that they reach the peak of physical health and then just stop