I'd question wether snakes stacked up in small containers in racks are 'happy' to be honest.
Have a Royal / Ball in a Viv /rub with a hide ( preferably two ) and a water dish and it's fair to say you won't see much of them ...
Add some branches and fake foliage and the same Royal will be out roaming and climbing for hours every evening .
I prefer the latter if only as they're be getting some exercise . .. I also think they're happier climbing and slithering around or else they wouldn't bother and just stay in their hides ..
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