When I got Bloo, he was only 5 or so weeks old, the runt of a huge litter, and the mother had passed away. I ended up choosing him because he was the tiniest, 10 oz at most and fit in my hand. Now he weighs over 20lbs easily. I still have his baby collar and I don't think it'd fit around his ankle now. This was him as my little Blueberry size baby.