Reader mail
The subject line was "sorry, long." It landed at 11:41 on a Tuesday night, which tells you most of what you need to know. I'm running it close to how it came in, minus her last name.
Kelsey - my dog Bodie (4, some kind of heeler mix) eats grass like it's a job. Not a polite nibble. He mows. He's done it since we got him at eight months but this spring it's every single walk, and he does not throw up after. Usually. My mother-in-law says his food must be missing something and I should switch. My neighbor says worms. I have googled myself into a corner and I am now a grown woman standing in her own backyard at 10pm with a flashlight, looking at dog poop. Is this something, or is it nothing?
Trish, Modesto, CA
Trish. Put the flashlight down.
It's almost certainly nothing. What makes it feel like something is a piece of folk wisdom I repeated for eight solid years before I ever bothered to check it.
The vomiting theory is thinner than everyone thinks
The story goes: dogs eat grass to make themselves throw up, so a grazing dog is a nauseated dog. I said that out loud at the park with real confidence. Repeatedly.
Trouble is, the grazers I actually live with don't throw up. Otis has cropped the same patch of fescue by our mailbox since 2018. He's been sick in the yard maybe four times in those seven years, and not once inside an hour of eating grass. Bodie doesn't throw up either, by your own account.
What matters is the order of events. Marta Quinn, the CVT who writes the vet-tech pieces here, put it to me this way: if the queasy stuff comes first (lip licking, hard swallowing, that stretched-out bow, drooling) and the dog then goes hunting for grass, that's a dog telling you something. If it just goes down and nothing follows, it's salad.
What I'd actually pay attention to
Two things. Neither of them is the grass.
The first is what's on the lawn, which is the part almost nobody asks about. Herbicide, fertilizer, snail bait, whatever the guy with the tank sprayer did on Thursday. A dog who mows other people's yards is eating whatever those yards were treated with, and the strip between the sidewalk and the curb is usually the most chemically enthusiastic ground on the block. I got a lot less relaxed about grazing the summer a neighbor told me, cheerfully, what she puts down for crabgrass.
The second is change. Grass eating that's been going on since eight months old is a personality trait. Grass eating that turns up in a dog who never did it, or in a dog who can't be pulled off the lawn and is out there working on it at 2am, is a different conversation, and it's one to have with your vet instead of with me.
On the deficiency theory: I'm not sold. Nobody has ever shown me a dog who quit grazing because the bag changed. If you've genuinely never measured what he eats in a day, though, that part is free to fix. I weighed every meal in my house for a month and found I'd been off by nearly a cup, which is a cheaper thing to learn than a $74 bag of something new.
Worth a phone call
Grass plus repeated vomiting. Grass plus a dog who seems dull or sore, or who started doing it out of nowhere last week. The grass on its own, no.
Otherwise, let him mow. Sniffing and grazing are most of what makes a walk interesting to a dog, and the slow unathletic ones are what mine come home happiest from.
Also in the inbox
From Erin in Bangor, in full: "Is it weird that my dog will only drink water if I am standing there watching her?"
No. Franklin does the same thing, and I've concluded he considers hydration a two-person job.
Trish, if you write back in October and tell me Bodie has quit, I'll assume it was the season and not anything either of us did. Send a picture of him mid-mow. I want to see the technique.
Kelsey Moran
Founder & editor · Asheville, NC
Started this site in 2019 after her third foster failure. Lives with two labs and a very opinionated terrier mix in Asheville, NC.
Comments
5 commentsDana R. · Tulsa, OK · Jul 9, 2026
the flashlight killed me
Priya N. · Somerville, MA · Jul 12, 2026
My vet said basically the opposite last spring? My terrier started grazing out of nowhere and she was pretty sure it was reflux. Two weeks of bland food and feeding her every four hours and it stopped, hasn't come back since. So I'd push back a little on waving it off.
Kelsey Moran · Jul 12, 2026
totally fair, and your vet had a dog in front of her, which I don't. that's the out-of-nowhere bucket though. that one I'd chase too. it's the lifelong grazers I think we over-worry.
Bill Hartigan · Coeur d'Alene, ID · Jul 15, 2026
Does it matter if the lawn has been sprayed?
Kelsey Moran · Jul 16, 2026
yes - honestly the only part of this I'd lose sleep over. middle section covers it.
Roberta · Fresno, CA · Jul 21, 2026
Nobody asked about my beagle but here goes. Duncan grazed his whole life, sixteen years, never bothered him once. The only time we ever ended up at the emergency clinic it had nothing to do with grass, it was tulip bulbs he dug out of the neighbors flower bed in March, four hours and a bill I still think about. He made it to sixteen and a half. His collar is still in the drawer by the door and I have not moved it so.
Marcus O. · Modesto, CA · Aug 4, 2026
Trish and I might live on the same block. Whole neighborhood gets sprayed the first week of April and you can smell it from inside the house. We walk in the school field now.
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