I have two of the biggest 1st week kittens I have ever seen! These guys weight is at 7.8 and 8.2 OZ. Last year my two litters of kittens did not reach the 8.2 mark until they were about 3 weeks old. Either their father is huge (which he is) or they are just giants! lol wow! Before I know it these guys are going to weigh over a pound by their 3rd week of life!