“Unexplained acute kidney failure and high levels of vitamin D, vomiting, tremors, eventually refusing to eat,” Facebook user Jennifer Ann posted to the page, with a photo of her dog. “Been feeding Hill’s I/D canned food. Staley passed away 12.16.18 after almost $10,000 in vet bills trying to save her life. Hills, sorry you’re paying for this.” Caitlin Gibson, a features reporter at The Washington Post, wrote in a tweet that her dog also died after eating affected prescription food from Hill’s. Her dog also showed symptoms of vitamin D poisoning. Hill’s Pet Nutrition said in the statement it had “identified and isolated” the issue, which was apparently caused by a supplier error. Hill’s said an investigation confirmed the elevated vitamin D levels, which it became aware of through a complaint about a sick dog in the United States. The company will now require the supplier to do additional quality testing before releasing ingredients.