If your dog eats kitty litter, it can cause an obstruction or constipation. Signs to watch out for are vomiting, reluctance to eat, loss of appetite, lethargy, or straining to poop. Because all kitty litter has liquid-absorbing properties it can cause irritation and inflammation to your dog’s intestines. But the clumping types of cat litter are the most dangerous. If your dog eats enough clumping litter, clumps can form in the stomach and intestines, creating a blockage. If your dog is small, even a little bit of kitty litter can be cause for concern. Call your vet right away. If your dog is larger and the amount eaten is moderate, then it’s safe to just keep a watch on your dog for the next 24 hours and if you see any kind of discomfort and anything less than completely normal pooping, get your dog to your vet asap.
The first step is an obvious one. Find a way to prevent your dog from having access to the litter box. You have a few options: Add a small enough kitty door that fits your cat but not your dog that goes to a room where you keep the litter box. If that’s too expensive or not doable, then try putting up a baby gate that your cat can jump over but your dog can’t. Put the litter box somewhere up high where your dog can’t jump but is comfortable and easily accessible to your cat. What we did was get a covered litter box and face the opening toward a corner of two walls close enough where Finn could get in but our dogs couldn’t.