Toby was over 3.5 pounds at 6 months old. Now at just over one year old, he is 5.3 pounds.
My mom's chi, Rocky, was 5 lbs at 6 months old. He's now 7.5 lbs. He is a full bred chi. He's Toby's half brother.
Anyhow, pure bred Chis come in all shapes and sizes. Your boy looks full chi to me.
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