Granted that ball pythons spend 90% of their time in the wild in underground rodent burrows and termite mounds, I would have to say that a tub probably feels very spacious to them. The only time they leave is to breed, eat, and find more burrows to hide in.
Thats in regard to ball pythons.
If we're talking about a species that does prefer open spaces and is active, then yes. I think it should be given a proper enclosure that includes open spaces and room to move. And I do exactly that with my colubrid. But my ball pythons? No. Because they won't take advantage of the space. Ive given them nice pretty decorated spacious glass tanks in the past and all it did was make some of them go off feed and have terrible sheds. They were holed up in their hide almost constantly and I only saw some of them come out only to feed.
I got a rack system and wham! Everyone starts feeding regularly! Perfect whole sheds. And they still spent the majority of their time in their tight hides which is about 1/16 of the size of the tub. Yup. They preferred their little hide than stretching in the larger tub space. Go figure.
I personally keep my animals in enclosures based on the species. I've personally found that tubs work great for ball pythons, but certainly not all other animals. I'll be getting a boa and they'll certainly not be in tubs. I know they are a more active species that will utilize as much space as I give them.
And note that not all tubs are small. There are some lovely display tubs out there that that people decorate as much as a pvc cage or tank. People use tubs because maintaining heat and humidity is easier than a tank and the ball pythons seem to drive. I know I wouldn't be using them If they were bad.
In the end, they hide in cramped spaces. That is what ball pythons prefer. Sure you get the occasional odd ball that is active, but as a species, I wholly disagree with you. Activity generally means stress in BP.
And one last thing. Tanks are for fish. I learned that early on in my BP keeping.
In the end, do what you want to do. Its your animals and your decision. But in regards to what you think they prefer, I disagree in general. Maybe if I had a ball that doesn't hide regularly, I'd put it in a display. But I don't. A hiding ball is a happy ball.
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