Hi:
Good question...sort of goes along with your hydration/humidity questions. You are asking the right questions, I commend you.
My Gabby defecates about every 11 Weeks, it's like clock work according to my 2004 records for her.
My Puff Adder is a bit more sporatic..20 weeks, 1 week, 3 weeks, 8 weeks, then 12 weeks.
My Horned Puff Adder (caudalis)goes sporatically like the Puff Adder. 3 weeks, 8 weeks, 3 weeks, 8 weeks....
Well..I'm shocked to find my Rhino has not gone since summer. So, I get the fun job of tubing her tommorrow and checking her out. She is still eating though as you can see from the picture. See I told you had a good question!
I keep very good records, which in my opinnon is a must for every keeper. Iwas able to give you an answer to your question and in the process identified a potiental problem. Keep in mind my Puff Adder did not go for 5 months that one time, so I'm to worried. But I post here and let you know what I find out.
Cheers,
Al

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The more people I meet...the better I like my venomous snakes.