In a recent IAMS poll of dog owners,* 69% said their dog eats grass. That’s quite a lot. Owners also have quite a lot of theories on why their dog is noshing on the lawn.

It’s not just modern-day canines that eat grass. It’s likely something that has been going on for thousands of dog years. According to
Opens a new windowDr. Tammie King, Applied Behavior Technical Leader at Waltham Petcare Science Institute, “It is actually normal canine behavior. It has to do with innate behavior from canine ancestors. Potentially a remnant behavior.”
Dr. King also shared this with us: “A lot of people think dogs eat grass when they’re feeling ill, but studies have shown that’s not necessarily true.”
But then why do dogs eat grass? To get to the (grass)root of this issue, we asked
Opens a new windowDr. Jo Gale, BVetMed CertLAS MRCVS Senior Manager of Global Science Advocacy at Waltham Petcare Science Institute.
'There's no one reason. They just like the taste, texture and feel of the grass.'
So it’s perfectly fine if your pooch decides to have an occasional grass snack. Who doesn’t crave a salad every now and then?
However …

If your dog is getting adequate nutrition, there’s no need to worry. But the experts we talked with asked dog owners to please keep in mind the following:
· Grass that’s been treated with weed killer or pesticides should be off the menu.
· If your dog is eating grass excessively or routinely vomiting from eating grass, consult your vet.

Looking for the perfect dog food to pair with their side of sod slaw? IAMS has the answer for that, too.
*Surveyed U.S. dog owners, age 18+
Sample Size: n=201
Fielded May 8 to May 10, 2020
If you’ve got a big love for big dogs, IAMS™ has a large-breed puppy formula specially made for their nutritional needs.
Many large-breed puppies have a tendency to grow very quickly. Unfortunately, if this tendency is encouraged by overfeeding, developmental bone problems can occur. To avoid these problems, careful feeding management is necessary. This should include
Our specially formulated large-breed puppy formulas make feeding management easier because they are designed for fast-growing, large-breed puppies (those with an expected adult weight of more than 50 pounds).
A protein level approximating 26% in these formulas promotes healthy body condition and balances the protein with the reduced number of calories in the food. Research has shown that
The protein in our large-breed puppy formulas supports normal skeletal and muscular growth.
Fat contributes more than twice as many calories in a diet as proteins or carbohydrates do. As the fat level increases, the energy content of the diet also increases, making feeding management more difficult for large-breed puppies. Several studies have shown increases in developmental bone problems when a diet was overfed.2, 3
By reducing the fat content of large-breed puppy formulas to about 14%, the metabolizable energy (ME) of the diets can be kept to a low level of about 1,800 kilocalories per pound.
Fat contributes more than twice as many calories in a diet as proteins or carbohydrates
Our large-breed puppy formulas, such as IAMS ProActive Health™ Smart Puppy Large Breed, are made specifically for growing puppies with expected adult weights of 50 pounds or more. These puppy foods are unique because they are formulated with:
Reduced calcium and phosphorus levels with a normal calcium-to-phosphorus ratio to promote proper bone development in rapidly growing large breed puppies.
1 Nap, et al. Growth and skeletal development in Great Dane pups fed different levels of protein intake. J Nutr 1991; 121:S107-S113.
2 Hedhammer, et al. Over nutrition and skeletal disease: an experimental study in growing Great Dane dogs. Cornell Vet 1974; 64:1-159.
3 Lavelle. The effect of overfeeding of a balanced complete commercial diet to a group of growing Great Danes. In: Nutrition of the dog and cat. Burger and Rivers (eds). Cambridge Univ Press, 1989:303-316.
4 Hazewinkel, et al. Influences of chronic calcium excess on the skeletal development of growing Great Danes, J Am Anim Hosp Assoc 1985; 21:377-391.
5 Goedegebuure, Hazewinkel. Morphological findings in young dogs chronically fed a diet containing excess calcium. Vet Pathol 1986; 23:594-605.
6 Hazewinkel, et al. Calcium metabolism in Great Dane dogs fed diets with various calcium and phosphorus levels. J Nutr 1991; 121:S99-S106.