Michigan police dog Rocco ate rocks splashed with slow cooker juice and needed surgery. Why dogs swallow inedible things and how not to miss the danger

What happened

On 30 October 2026 the US news agency UPI, citing the broadcaster WWMT, reported the story of a service dog with the police department in Grand Rapids, Michigan. A dog called Rocco was taken to the Animal Emergency and Specialty Hospital in Byron Center with a stomach full of rocks.

His handler, Austin Diekevers, explained how the service dog came to be interested in rocks. "I'd made beef sandwiches in the slow cooker. I usually give the leftovers to our chickens, so I tossed them off the deck, and some of the juice from the slow cooker landed on the landscaping rocks in the yard," he said. A few minutes later he saw Rocco chewing on the rocks, but he wasn't sure whether he'd swallowed any.

How they knew something was wrong

The handler called the vet straight away. "They weren't too concerned, as long as he's having normal bowel movements, eating and drinking," Diekevers says. But the next day Rocco stopped eating and was taken to the clinic. An X-ray showed that his stomach really was full of rocks, which had to be removed surgically.

"Rocco came through surgery like a champ and spent 24 hours with us before heading home," the clinic wrote on social media. According to his handler, Rocco will return to regular duty in about a week.

Not the first time this year

This wasn't Rocco's first trip to the emergency clinic in 2026. In April he impaled his leg on the edge of a fire pit and needed blood transfusions to save his life. Service dogs move a lot, work in difficult conditions and often take more risks than pet dogs.

Why dogs swallow rocks

There are various reasons:

• the smell of food — as with Rocco: a rock covered with juice or fat becomes a "treat" for a dog;
• play and boredom — young, active dogs carry and chew rocks, and sometimes swallow them by accident;
• teething in puppies — they want to chew everything;
• pica — a condition in which a dog regularly eats inedible things; it can be linked to nutrition, gut disease or stress;
• anxiety — some dogs chew and swallow objects when they're nervous.

Why swallowed objects are dangerous

A small, smooth object sometimes passes on its own. But rocks, bones, fruit stones, toys, socks and other things can get stuck in the stomach or intestines and cause a blockage. Sharp objects can damage the wall of the intestine. Left untreated, a blockage is life-threatening: the blood supply to the intestine is disrupted and peritonitis develops.

Warning signs

If your dog may have swallowed something, keep an eye on them. Warning signs include:

• refusing food — as with Rocco;
• vomiting, especially repeatedly, including after drinking;
• lethargy and reluctance to move;
• abdominal pain — your dog hunches up, won't let you touch their belly or adopts a "prayer position", with front legs on the floor and rear end raised;
• no faeces or straining without result;
• diarrhoea, sometimes with blood.

Why you shouldn't wait for it to "pass on its own"

In Rocco's case the first advice over the phone was to watch him, which is normal practice if a dog is behaving normally. But the decision to wait should be made by a vet after an examination and, if necessary, an X-ray or ultrasound. If the object is large or sharp, or your dog has already stopped eating, delay can make surgery more complicated. An object can sometimes be removed from the stomach without an incision, using an endoscope, if you act in time.

What to do if your dog swallows something

1. Call your vet and describe what, when and how much your dog may have eaten.
2. Don't make your dog sick — sharp or large objects can injure the oesophagus.
3. Don't give laxatives or feed your dog "to push it through".
4. Watch appetite, vomiting, faeces and behaviour.
5. Go to the clinic if vomiting, refusing food, lethargy or pain appear.

How a vet finds a swallowed object

Rocks show up well on an X-ray, which is why Rocco's diagnosis was quick. Other objects are harder: fabric, plastic, rubber and wood often don't show up on an X-ray. The vet then uses ultrasound, repeat images or an X-ray with contrast material, which shows where food and fluid stop passing through the intestine. Sometimes it's only possible to tell what happened during surgery.

The most dangerous finds

Some objects are dangerous even in small amounts:

• batteries, especially flat button cells — can cause chemical burns to the oesophagus and stomach within hours;
• magnets — if several are swallowed, they attract each other through the intestinal walls and damage them;
• thread, ribbons, fishing line and tights — especially dangerous for cats: the intestine bunches up along the thread like an accordion and can tear;
• bones — sharp splinters injure the intestine, and large pieces get stuck;
• corn cobs and stones from peaches, apricots and mangoes — a common cause of blockages in dogs.

Never pull on a thread hanging from your pet's mouth or from under their tail: this can damage the intestine. Take your pet to a vet straight away.

Endoscope or surgery

If an object is still in the stomach or oesophagus and is small and not sharp, a vet can sometimes retrieve it with an endoscope — a flexible tube with a camera and forceps, passed through the mouth under anaesthetic. There's no incision, and your dog recovers faster. But large, heavy or numerous objects, like Rocco's rocks, are hard to remove with an endoscope, and if an object has already moved into the intestine, abdominal surgery is usually needed. So the sooner your dog sees a vet, the better the chance of a minor procedure.

Puppies and young dogs

Puppies and young dogs most often swallow inedible things: they explore the world with their mouths, play a lot and don't know when to stop. A home with a puppy should be prepared like a home with a toddler: clear shoes, socks, cables, small toys, medicines and batteries off the floor, and cover the bin. On walks, it's useful to teach your puppy not to pick things up and to swap what they've found for a treat rather than taking it by force: otherwise dogs learn to swallow their finds faster.

If your dog keeps picking up rocks

When eating rocks becomes a habit, simply forbidding it isn't enough. A vet usually starts with an examination and tests to rule out gut disease, nutrient deficiencies and other causes. After that, more physical and mental exercise, puzzle toys and work with a trainer help. On walks in rocky places, a basket muzzle is advised for some dogs: they can pant with their mouth open and drink in it, but can't pick anything up.

Recovery after surgery

After a foreign object is removed, a dog usually needs rest, a protective collar or suit to stop them licking the wound, a gentle diet in small portions and the pain relief prescribed by the vet. Walks are short at first and only on a lead. It's important to watch the wound and appetite and go back for a check-up. Rocco reportedly spent only a day at the clinic and should be back on duty within a week, but every dog's recovery is different.

How to protect your dog

• Don't leave food scraps and fat where your dog walks: on rocks, in the grass or by the bin.
• Clear away small items — socks, toys, hair ties and batteries.
• Give safe chew toys of a suitable size.
• Teach "leave it" and "drop it".
• If your dog regularly eats inedible things, talk to your vet: there's sometimes an illness or stress behind it.

Service dogs and their health

Police, customs and rescue dogs have regular veterinary check-ups, but their work brings injuries, overheating and poisoning. Behind each of these dogs is a handler who lives with them and knows their habits. It was the handler's attention, in noticing that Rocco had stopped eating, that helped to find the problem in time.

What this means for Europe

The story from Michigan is an individual case, but vets in Europe see the same situations every day: dogs swallowing rocks, bones, toys and socks. Be especially careful in autumn and winter, when there's plenty of food on the table for the holidays and greasy scraps and litter on the streets. The advice is the same in any country: if your dog has swallowed something inedible and stopped eating, get to a vet urgently.

When to see a vet

See your vet straight away if your dog has swallowed a sharp, large or toxic object — a battery, magnet, bone or sock — or if, after possibly swallowing something, they develop vomiting, refuse food, seem lethargic, have abdominal pain or pass no faeces. An X-ray or ultrasound can show where the object is and whether surgery can be avoided.