Maybe Munchkin will be as big as my Willi. When he was 6 months he was already taller than all my other cats, the vet thought that he was 2 years old already. When Willi was younger and not sick he had 19 pounds and he was not fat.
Noticeably bigger since the first pic of him 2 weeks ago. Not sure how big he'll get, but looks like he might be a big one! In this pic -- kitten 5 pounds, Robocat 14 pounds. Robocat 13 years old, kitten, 12-16 weeks?