thanks to everyone who responded so quickly.

one last question for experienced keepers of GTPs: do you think he/she looks underweight at all? like i mentioned, acting healthy. there are no physical problems like tail kinks or parasites, nor are there any behavioral problems like aggression or lethargy. i'm just curious because the former owner who bought him as a neonate placed his 'birthday' in march of 2007. since i don't really have a standard of comparison i could be way off, but i think he looks far too small to be four years old. i know males are smaller in general (if he is a male), but does anyone think he looks undersized for a GTP of the same age?

thanks again.