Let's keep this one going! So far the biggest is 20 pounds, Stomper is at 2nd place at 17.6 pounds. My big love! When my husband sees the little ones, he says I wish he was the small. He is so full of it, we love our BIG guy just the way he is. However...he does take more of the bed then he did at 5 months old. He is bigger that a cat now and thinks (or maybe he does) OWN the bed!!!!