How accurate is growth rate in determining breed?

[BunnyLove89]

I got my first bunny, Weston, 2 weeks ago. He's probably close to 3 months now. He was pretty tiny when I got him but he has just about doubled in size since I got him. I don't know his weight since I don't have an accurate scale, but he's definitely growing!

 

[woahlookitsme]

Bigger breeds tend to grow in frame quicker than smaller breeds but smaller breeds can put on weight faster compared to their size ratio if that makes sense. Pictures help but sometimes there is no clear way to tell what breed but only give educated guesses