Jasper is now 5 months and seems to be in a growth spurt. I don't have a current weight but will soon. My question is, as they are a slow to mature cat, what age would they be when they full grown? Other cats seem to be full size between 10-12 months? I was just thinking about this as I noticed that Jasper is no longer the 1 hand grab and has become a 2 hand lift...ha!

Awww, he may be a big boy!! I think if I remember right, that growth slows down after the first year, but they may still grow and change up to 4 years old. I didn't get Simone until she was 18 months and she changed tremendously after that.
Hi Ruthann,
I was asking Teddy's breeder the same question awhile back. She said that by two years they've done most of their growing, but their colours can continue to come in up to four years. Teddy is 20 months now and I think he's going through a little growth spurt too (I'm basing that mostly on his appetite). He's not a big Raggie compared to many, especially the males. I expect him to be in the 12-pound range once he's fully grown. The other factor to consider is how big Jasper's parents are.
Coral