Today when Toki was having the running crazies, he completely pulverized Kai by accident and she yelped from it. Toki is around 10 lbs and Kai is 3.8lbs. When I adopted Kai I thought she would be in the 6 lb range, being a good match for Toki. Her birth weight was 5 oz. Did anyone else chihuahuas end up being smaller than they thought? I hear about chihuahua ending up bigger, but she's like a 3 lbs deference.