Eating behavior
Why does my dog eat cat poop out of the litter box
Last updated 23 September 2026 · How we write and check this
Short answer
Cat feces often retains more protein and fat smell than dog feces because of differences in feline digestion, which many dogs find genuinely appealing to sniff and eat. It is a very common cross-species habit and manageable mainly through blocking access to the litter box rather than training the dog out of interest in it.
Why cat waste is particularly tempting
Cats are obligate carnivores with a diet higher in protein than most dogs eat, and their digestive process leaves behind more residual protein and fat in the stool, which creates a smell many dogs find distinctly appealing compared with typical dog waste.
Health considerations worth knowing
Cat litter itself can also cause digestive upset or, rarely, a blockage if swallowed in quantity along with the waste, and cat feces can carry parasites, so this habit is worth actively preventing rather than simply tolerating as harmless.
Blocking access is the most reliable fix
A covered litter box, a baby gate with a gap too small for the dog but large enough for the cat, or placing the litter box on a raised surface the dog cannot reach are all more reliable long term solutions than trying to train the dog to ignore it.
Choosing a setup that still works for the cat
Any solution needs to genuinely respect the cat's own comfort and access, since a stressed cat that avoids a hard to reach or overly enclosed litter box can develop its own set of problems, sometimes including toileting outside the box in protest. A cat door installed in a utility room, or a tall baby gate the cat can jump but the dog cannot clear, tends to strike a workable balance for most households, keeping the litter box fully accessible to the cat while genuinely blocking the dog, and most cats adjust to a new access point within a few days.
Key takeaways
- Cat feces often smells more appealing to dogs due to the higher protein content in a typical cat diet.
- Swallowed litter along with waste can cause digestive upset, so the habit is worth actively preventing.
- Blocking physical access with a covered box, gate, or raised surface works better than training alone.