Have you always fed him every 7-10 days? I fed my baby Cribo's every day after or day of defecation, they grew like mad to 4' then slowed down. They put a lot of that food into growth in that first year. Now I feed every 5 days or so. I have also heard of some localities of BT's that are known for being smaller, as well as Dwarfism in Couperi which aren't to far off.

Does it look Dwarf? Standard sized head/girth but short length or is it just small?

Nate