Looking for some opinions.

When I got my Lesser (Male) I weighed both.

My Normal has doubled in weight, I was able to pop my Lesser but unable to get anything from my normal, Both are eating the same size rats (Pups) and both eat on the same 4 day schedule

At what age do females bulk up faster then males ?

Also my Normal has a thicker bulge at the base of the tail as seen in this picture, I have called the local vet and will get him/her in as soon as it warms up again...

Not that it matters but I was under the assumption I had to boys, now I am thinking I have one of each..