Why is a 16 square foot enclosure, which might translate to 4ft x 4ft, considered restrictive for long-term housing?

Answer

It quickly becomes restrictive when accounting for separate zones like a sleeping corner, litter box, and feeding station.

Even though 16 square feet might meet the minimum stretch requirement, it becomes restrictive when space must be allocated for necessary separate zones like sleeping, feeding, and litter areas.

Why is a 16 square foot enclosure, which might translate to 4ft x 4ft, considered restrictive for long-term housing?
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