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Litter Box Size Guide
The advertised outer footprint includes walls and rims; ask for usable internal dimensions.
A cited starting point
FelineVMA’s litter box guidance uses 1.5 times nose-to-tail-base length as a general guideline. Entry access and the individual cat still matter.
Measurement worksheet
| Record | Check |
|---|---|
| Cat length | Nose to base of tail, using the cited guideline |
| Usable inside floor | Length and width rather than outside rim |
| Entry | Opening and step-over height |
| Covered space | Headroom and turning room with lid fitted |
| Location | Available floor space and unobstructed access |
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Check extra-large litter boxes and open trays against the measurements. Ask for missing internal dimensions. For mobility problems or new toileting changes, involve your veterinarian; this checklist is not a medical assessment.
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