Why does my dog eat grass, vomit, and have erratic eating habits?
Hello, this could be due to a number of issues, including her known heartworm disease if she is symptomatic and it's making her feel unwell. A few common reasons for a young otherwise healthy dog to have a waxing and waning appetite with no other symptoms would be a low grade chronic pancreatitis, mild IBD (inflammatory bowel disease), or a food sensitivity. If you haven't done a complete bloodwork panel with your vet, I suggest starting there. Your vet can discuss a feeding trial with prescription food - I would recommend trying an easily digestible food that's easy on the stomach such as I/D or EN (there are lots of acceptable brands of prescription food, these are just a few common ones), and if that doesn't help then do a trial of a limited ingredient or hydrolyzed diet for food sensitivity. Hope this helps!
Updated on September 23rd, 2025