Second thisCooperDragon":18uvu9xr said:Out of the two I'd probably go with a 40g breeder because you want a tank that is at least as wide as a dragon's length so they can turn and move about more easily I'd consider a 40g breeder a minimum size though and look into a larger tank that is at least 4'x2'x2'. Possibly a custom build. The more space you can provide the better.