I have a Dumeril who loves her food. Loves it. But I'm sure she needs to be cut back. My question is.... Is there a chart thats accurate or something I can follow about size and weight?

Background info: I picked up a adult (approximately) six year old female Dumeril boa from a friend who has an exotic pet store. He received her from a dog/cat vet who came to work one morning and found her at his back door (her and a male were both in a nasty 15 gallon fish tank). They treated her for several issues (respiratory infection, mites, stuck shed, cuts, and the typical neglect issues) and discovered she hadn't had heat before. They slowly worked her up to normal temperatures and started working on her weight (she was skin and bones).

At this point I took her in and gave her a permanent home. I've been so concerned with her health and weight that I failed to realize that heavy is bad too. She is 6'5" and weights 15lbs (I just weighed her!). She has dimples by her cloaca!

I have been feeding her a large rat every 14 days and it put weight on her well. Now what kind of a schedule should I put her on? One that would maintain a healthy snake? What should her ideal weight be?

Questions? Concerns? Comments?

P.S. The male eventually died. He had lost an eye and had a several broken ribs puncture organs. They tried but he just couldn't make it.