I didn't see any veins. I assumed they'd all be infertile. She was hatched in late June 2013 so she'll be 7 in a few weeks. I want to get her back to size but don't want to feed her too often either. Right now she's eating about every 10 days. I thought weekly feedings might be too frequent at her age but I'm sure she'd love it. A 25 year old snake is a nice achievement. Congratulations!