Wow...
Are you feeding them 2-3 times a week? I have a hold bad male from Aug. 09 and he is 40g. My largest male (~8 years old) is only 140g. If I were you I would cut back on the feeding. Over weight animals can have similar health problems as over weight people. Also, over weight animals tend to be less productive when it comes to breeding.
I would suggest feeding them 1 appropriate sized food item every 10-14 days.
-Chris
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Christopher E. Smith
Contact
Captive Bred Herps
Wildlife Research & Consulting Services, LLC

