All snakes grow at different rates so you can not tell from length but as yours is only 12" it cannot be to old and probably recently hatched, maybe a couple of months?
my ghost is only a year old this month and she is 3ft and 276grams.so it really does depend on the snake
0.1.0 Amels (sid) 1.0.0 carolina stripe (simon)0.1.0 ghost (silva) 1.1.0 diffused/bloodreds (scarlet and samson) 1.0 staffy x beagle soon to have female pin royal
some breeders hold their hatchlings back (feed every 10 days or so) so even at only 12 inch,could still be 5-6 months old
the shop i bought her from gave me a care sheet from when she was born so i was lucky with her.
0.1.0 Amels (sid) 1.0.0 carolina stripe (simon)0.1.0 ghost (silva) 1.1.0 diffused/bloodreds (scarlet and samson) 1.0 staffy x beagle soon to have female pin royal
its mad thou coz my sid is the same age and is half the length and 1/4 weight
0.1.0 Amels (sid) 1.0.0 carolina stripe (simon)0.1.0 ghost (silva) 1.1.0 diffused/bloodreds (scarlet and samson) 1.0 staffy x beagle soon to have female pin royal
I have 2 corns one is 11 mth 125g roughly 2ft 6 the other is just over a year old and is about 2ft and weighs 55g it goes to show the difference there can be.