Choosing guide

Automatic litter box: choosing by “Cat size”

Cat size is one of the most practical things to check before buying a self-cleaning litter box, since an enclosure built for an average cat can feel cramped for a larger breed. A bigger cat needs more room to turn around and settle inside the tray, while a smaller cat can be perfectly comfortable with a more compact model. Check the maker's own size guidance for your cat's weight and breed before choosing.

By Romain Brunel, updated on 19 October 2026

Cat size: 2 options compared

Option	Models analysed	Median score	Top rated
Large cats	6	8.5/10	Neakasa M1 Plus
Medium-sized cats	1	n/a	n/a

Cat size: option by option

Large cats

6 models8.5/10 at the median

Who it's for: This guide suits anyone with a large or heavy cat, looking for a self-cleaning litter box sized and rated for bigger breeds.
Avoid if: Skip this pick if your cat is small or kitten-sized, since these models are built around larger cats and may be oversized or unnecessary for a smaller pet.
Our advice: Only a handful of large-cat models are tracked here so far, so compare the chosen option carefully against your own cat's size and habits rather than assuming it fits every large breed the same way.

Top rated

Compare 6 models

Medium-sized cats

1 model

1 model analysed, median rating not calculated.

Filter 1 model

Cat size: your questions

Automatic litter box: choosing by “Cat size”

Among our 6 automatic litter boxes, the most common option is “Large cats” (6 models). The table on this page compares 2 options: model count, median rating and the highest-rated model for each.

“Large cats”: which model is highest rated among automatic litter boxes?

Neakasa M1 Plus, rated 8.9/10, is the highest-rated of the 6 models models with this option.

Automatic litter box: other factors to consider

All models analysed →