Q: Why do Dogs and Cats Eat Grass?

Dog Eats Grass: Getty Images

Does your dog eat grass? Does your cat eat grass too?

Q: My dog eats grass and my cat eats grass too! Why do they do this? Does it mean they are sick?

A: Your Dog Eats Grass

If your dog eats grass it can be normal behavior. Dogs are omnivores and require both meat and plant material to survive. Grass is a form of roughage, which aids dogs in digestion. It is also possible that when your dog eats grass, it tastes good to him! 

A: Your Cat Eats Grass

If your cat eats grass it is probably OK. Cats, unlike dogs, are carnivores. They do not need as much plant material in their diet as dogs do.

However, pet stores do carry cat grass that many cats seem to enjoy. Just as in dogs, the grass aids in digestion and may even be tasty. Just because your pet eats grass it does not necessarily mean that he is sick.

But, be very careful not to let your cat or dog eat grass that has been recently fertilized. Lawn and plant fertilizers can make your pet very sick.

Author's profile photo
Dr. Lauren Brickman Dr. Brickman started as a veterinary technician at Garden City Park in 1997 and went on to…

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Comments (4)

Anonymous (Unverified)

nice storie hope his tumor is'nt bothering him! yay happy for the family !!

Anonymous (Unverified)

A dog eats grass when it has an upset tummy, to make himself sick! My dog does this sometimes, when he is 'under the weather' and is always better after it! Jean

Lisa

My 2 year old Black Lab, Lanny loves certain grasses in our yard-he is picky though. I recently found out he loves lettuce and different kinds, along with carrots, celery, apples, blueberries, bananas, yogurt-I buy him a large container of vanilla flavored and not the kind with fake sugars in it. Can these grasses/lettuce's and fruits hurt him any? He doesn't have any bowel problems and it is the normal amout or less of our RDA's.

Katie

My 3 yr old male Chihuahua recently had to have his anal glands expressed which we did at home. He now has very little appetite, lays around alot and not as "happy" as usual. We are "watching" him for a couple of days to see if he'll bounce back but I think he should be seen by a vet and put on anti-biotics.