It’s arguably the grossest habit our dogs have. You love them, but watching them head for the litter box looking for a "snack" is enough to turn anyone’s stomach.
While it’s disgusting to us, it’s unfortunately very common. But why do they do it, and is it dangerous? We spoke with Leah Callaghan, a Registered Veterinary Nurse with Butternut Box, to find out why dogs raid the litter box — and how to stop them for good.
Why do they do it? (It’s not what you think.)
A common myth is that dogs eat cat poop because they’re missing specific nutrients in their own diet, but according to Callaghan, that’s rarely the case.
"Dogs show interest in cat waste for simple reasons," says Callaghan. "The scent is strong, and undigested nutrients often remain in it, so dogs view it as food rather than something unpleasant," she adds. "This behavior links to natural scavenging instincts rather than a diet issue.”
The Real Health Risks
Beyond the "yuck" factor, this habit carries serious risks. Cat waste can carry harmful bacteria and parasites that cause stomach upsets and infections in dogs.
However, the bigger danger might actually be the litter itself — especially if you use clumping clay.
"Clumping litter brings a different risk," warns Callaghan. "It swells when wet, so dogs face blockages in the gut if they swallow enough of it." Even small amounts can dry out the stomach and slow digestion, but repeated access raises the risk of a dangerous intestinal obstruction.
Pineapple probably won’t help.
If you’ve searched online, you’ve likely seen advice to add pineapple, pumpkin, or "coprophagia deterrent" powders to your cat’s food to make the waste taste bad.
Does it work? "In practice, these rarely make a meaningful difference," says Callaghan.
“Most dogs stay interested because the behavior comes from instinct and routine rather than flavor." Even if the taste changes slightly, the habit is often too strong to break with food additives alone.
The Solution: Management Over Training
Because this behavior is instinctual, training a dog to "leave it" when you aren't in the room is incredibly difficult. "Management tends to be far more effective than altering the cat's diet, because it removes the opportunity altogether," says Callaghan.
Here are the best ways to manage the environment:
- Physical barriers: "A baby gate works well, as it gives the cat access while keeping the dog out," says Callaghan.
- Elevated stations: If your cat is a confident climber, moving the box up high where the dog can't reach is a simple fix.
- A self-cleaning litter box: If gates and high-jumping aren't options for your home, the most effective solution is to remove the temptation instantly. Callaghan notes that "enclosed or self-cleaning litter boxes lower odor and reduce the dog's opportunity to reach the waste."
This is where the Penthouse Paws Litter IQ® comes in. Because it automatically scoops waste minutes after your cat leaves the box, there’s nothing left for your dog to find. It eliminates the "snack," locks away odors, and keeps your dog safe from dangerous clumping-litter blockages without you having to police the bathroom 24/7.
When to Call the Vet
While litter box raiding is usually just a gross habit, it can sometimes signal a medical condition called Pica — the compulsion to eat non-food items.
"That pattern suggests pica... where dogs swallow things that are not food, such as stones, soil, fabric, plastic, or paper," says Callaghan.
If you notice your dog eating other non-food items, or if they show signs of "weight loss, vomiting, lethargy, or changes in stools," Callaghan advises that a veterinary check is important.
The Most Important Takeaway
You aren't going to talk your dog out of this habit; their scavenging instinct is too strong. The only way to win is to change the environment.
"The main goal is simple," says Callaghan. "Change the environment so the dog cannot access the tray, while ensuring the cat still feels secure.” Whether that means a baby gate or upgrading to a Penthouse Paws Litter IQ®, removing the access is the only way to keep your dog safe and your home clean.
FAQs
How do I keep my dog from eating cat poop from the litter box?
The most effective method is physical management rather than training. Callaghan recommends using baby gates, elevating the litter box, or switching to an enclosed or self-cleaning litter box to physically remove the opportunity.
What is the best dog-proof cat litter box?
An enclosed or self-cleaning litter box is the best option because it "lowers odor and reduces the dog's opportunity to reach the waste.” The Penthouse Paws Litter IQ® is ideal for this, as it automatically seals waste away minutes after use, removing the temptation entirely.
Why do dogs keep getting into the litter box?
Dogs are drawn to the strong scent and "undigested nutrients" often found in cat waste, viewing it as a food source. Callaghan says this is usually a natural scavenging instinct rather than a nutritional deficiency.
How do I get my dog to leave the litter box alone?
Since training against instinct is difficult, the best approach is to "change the environment so the dog cannot access the tray." Use sturdy baby gates, raised platforms, or automatic litter boxes to block access while ensuring your cat still feels secure.