Riggs is 22 weeks old today, and he's HUGE! I weigh him every Friday as he was born on a Friday, and he far outweighs our other puppies at the same age. He has definitely started his "teenage" tendencies early, too! Selective hearing, ignoring recall (which used to be fantastic), jumping up on me (this is a new one)... I keep an eye on all our dogs weight - I like to keep the youngsters on the lean side till they're full grown, and Riggs definitely has a waist and I can feel his ribs with gentle pressure so I am pretty sure he's not tubby.