Not sure how big yours is, but mine grew quite a bit still after 6 months. She's about a year and a half, and I have to remember to weigh her because I still thinks she's growing. Male veileds can get two foot (12 inches snout to vent). I'm guesstimating that my female is about 13-14 inches snout to tip of tail. Of course males can grow considerably larger than females. Not too sure about the age classification thing though. I know there's sub adult and adult classes. I'm guess at a year and a half mine would be a sub adult; starting at one year, and an adult at two???