[twinkie]

I find the weight charts fairly inaccurate. Since your puppy was the only one in the litter it will be on the bigger side at first, but shouldn't affect the final size. My Princess chi was 1 lb 3 oz at 12 weeks old when I got her, which should have put her at about 3 lbs full grown & now she is a bit over 5 lbs at almost 2 yrs old. Your little one will be over 4 lbs since at 9 weeks they still have a ton of growing left to do. Some breeders will just lie to you if they think you want a small dog - not all of them, but unfortunately it does happen, sometimes breeders cannot guarantee size, but in this case it seems a little unreasonable to say the dog will be 4 lbs when it is already 3 lbs at 9 weeks. I don't feel my breeder for Princess chi lied to me about her size as she was sooooo tiny when I got her, I just wanted to make sure I had a dog within the chi breed standard under 6 lbs as my sisters chi is 6.5lbs & I wanted one a bit smaller.

I would talk to the breeder about this if it bothers you.