Welcome to Big Paws Only. I'm Tina, mom to Jack.
I have a special spot in my heart for Dobes. And he is a cutie.
I really don't know much about growth rate, but those paws do look big. Are his parents big?
My young adulthood was spent with Dobes. Our first was petite and the second was massive. Same breeder. My parent's are now on their 4th Dobe, this guy is average size but then #3 was large.
I wonder if a Google search on Doberman growth rate would give you some answers.
His mom is about 80 lbs, breed standard is 65- I haven't seen the dad. Here is a picture of an 8 month old cousin who weighs 80 lbs, they grow until 18 months. In his bloodline is a dog named Lancer who was 130 lbs- I called him Arnold Schwartzendobi
I hope he gets that big, they look like a Great Dane in Dobie shape and color!