Help! My Dog Eats Grass Daily! (Vet Answered)
This question has been answered by a vet
Veterinarian & Animal Behaviorist
With nearly two decades in veterinary medicine, Dr. Paola brings hands-on experience across multiple species. A graduate of the University of Guadalajara, she specializes in preventive care, animal welfare, and positive reinforcement training.
The Question
“Hi Dr. Paola,
Rex eats grass daily. Every time he goes outside, he eats grass. I’ve been told that dogs only do this when they are feeling sick, but he has zero other symptoms. He’s a 4-year-old Lab mix and has been doing this since he was a puppy. Should I worry? ”
– Gayle
Quick Info about Rex
Hi Gayle,
Grass-eating pups often concern pet parents, and I’m glad you’re paying close attention to Rex’s behavior. The idea that dogs only eat grass when they’re feeling unwell is a widespread myth, but it’s not entirely accurate. While some dogs may occasionally eat grass and then vomit, most dogs that graze do not show any other signs of illness, and it doesn’t necessarily indicate that something is wrong.
In Rex’s case, since he has been consistently eating grass since puppyhood, shows no signs of illness, and appears otherwise healthy and active, this behavior is likely a normal part of his routine. Dogs may eat grass for various reasons, such as boredom, curiosity, or simply because they enjoy the texture or taste. Some behaviorists also believe it may be an instinctive behavior inherited from wild ancestors who consumed plant matter found in their prey’s digestive tracts. It is also possible they are looking to add some fiber to their diets. Some vets suggest they may be looking for specific enzymes, although there are no studies about this. As long as Rex is on a complete, balanced diet, has regular veterinary check-ups, and isn’t ingesting chemically treated grass or toxic plants, this habit is usually harmless. Think of it a bit like a human nibbling on parsley or chewing gum out of habit.
If you ever notice a sudden increase in the intensity or frequency of the behavior, or if it’s accompanied by other concerning signs like decreased appetite, changes in stool, or lethargy, it would be wise to consult with your veterinarian. But based on what you’ve shared, there is no reason to worry at this time. Just be proactive and allow him to chew on chemical-free grass. I hope this gives you some peace of mind!
– Dr. Paola