My male that is over 2 years old has slowly but surely been getting longer. He is now 17 inches long and at a year and a half he was 14 inches long. So he grew 3 inches this year. I'm pretty sure he's about maxed out though. Ambilobes are on the smaller side for panthers if you as me. The tamataves, nosy mitsios, and sambavas always seem to get bigger. Well atleast from what I've seen they get bigger.