|At birth, kittens should weigh approximately 3 to 3 and a half ounces.
At 1 week weight should be approximately 4 ounces.
At 2 weeks, weight should be approximately 7 ounces - Your others sound in line with this however, at almost 3 weeks old now, they should weigh a little more.
At 3 weeks, weight should be approximately 10 ounces - this is where your kittens should be at this stage.
At 4 weeks weight should be approximately 13 ounces.
At 5 weeks, weight should be approximately 1 pound.
By the end of the 8th week, kittens should weigh approximately 2 pounds.
Trixie had 4 kittens on May 21. The youngest one died on the 23rd. The firstborn, Cajun, was big at birth (I didn't have a scale yet but he was pretty hefty!). The second, Abby, wasn't quite as big, but was pretty darn close. The 3rd, Lilliputian (Lilli for short) was only about half the size of the others.
So, yesterday I was getting a little concerned as the 2 oldest ones look soooo huge and while Lilli is bigger than when she was born, she's still, by far, the runt of this litter. I went out and bought a food scale and came home to weigh my kitties. When I weighed them, I thought the scale must be wrong so I grabbed a steak out of my fridge to test it and it was right!
Anyway, I'll stop rambling. The kittens are 13 days old (12 when I weighed them).
Cajun: 12 oz. (avg weight for age 7 ounces)
Abby: 11.5 oz (avg weight for age 7 ounces)
Lilli: 8.5 oz (avg weight for age 7 ounces)
Now, I was super concerned and ran out to buy KMR for Lilli since she weighed sooooo much less than the others. She won't take it though BUT, Looking at what Gayef posted, the first two are actually WAY over what they should be and Lilli is about right (a little over but with 7 being the avg, I assume 6-8 is about the norm.)
Soooo....should I be concerned? Should I be doing something differently?