If I had a dollar for every person who walked into Leo & Lucky’s and said, “Rachel, my dog won’t stop itching…” I’d have a whole lot of dollars. And I can almost predict the next question: “Do you think it’s the chicken?”
Poor chicken. It gets blamed for everything.
Can dogs have an intolerance, sensitivity or allergy to chicken? Absolutely. But chicken is also one of the most widely used proteins in pet food. It’s in kibble, canned food, treats, chews and toppers, and sometimes it sneaks into a food with a completely different protein pictured on the front of the bag. When chicken shows up on every list of “problem proteins,” remember that part of what we’re seeing is simply exposure. More dogs eat chicken, and many of them eat it in multiple forms every single day, so naturally we’re going to see more dogs who have problems with it.
It’s a numbers game, man.
That doesn’t mean we ignore chicken. It means we investigate before we convict, because itching is a symptom, not a diagnosis. Instead of immediately asking, “What food should I take away?” I want to know something much more useful: Why is this particular dog itchy?
The Itchy-Dog Detective
When someone tells me their dog is itchy, I start asking questions. Where are they itching—paws, ears, belly, rear end, everywhere? Is the skin red? Is there hair loss? Do they smell a little funky? Did this start suddenly or has it been building for months? Does it happen around the same time every year? Are there digestive problems happening at the same time? And one of my favorites: What changed?
Maybe there was a new food or treat, shampoo, medication or flea and tick product. Maybe the lawn was treated, the dog spent more time outside, or somebody introduced a new chew and forgot to mention it because “it’s just a treat.” I want to know about all of it, because the front of the food bag is only one part of a dog’s world—and only one part of the diet.
Here in Florida, environmental triggers deserve a seat at the table pretty much year-round. We have grass, pollen, mold, humidity, fleas and all the other lovely things that come with living in paradise. A dog that gets itchy every spring may be telling us something very different from a dog whose problems began after a diet change. Unfortunately, our Florida version of “seasonal” can sometimes feel like twelve months long, so timing is a clue, not a diagnosis.
Once the skin becomes irritated, the picture can get even more complicated. A dog scratches because he’s itchy, the scratching damages an already unhappy skin barrier, and that irritated skin can become more vulnerable to secondary problems such as yeast or bacterial overgrowth. Now the dog is even itchier, so he scratches and licks even more.
And this is one of the most important things I want pet parents to understand: what started the itch may not be the same thing that is keeping the dog itchy.
That’s why simply switching from chicken to salmon—or grabbing the latest bag with “sensitive” written across the front—doesn’t always solve the problem.
But What If It Really IS the Food?
Sometimes it is.
Food-related reactions can show up in ways that look frustratingly similar to environmental problems: itchy skin, paw licking, face rubbing, recurring ear trouble and other skin complaints. Some dogs may have digestive signs as well. Unfortunately, the dog does not come equipped with a little flashing sign that says THIS ONE IS THE FOOD.
We also tend to use food allergy, food sensitivity and food intolerance as though they all mean exactly the same thing. They don’t. A true food allergy involves an immune response. An intolerance does not necessarily involve that same immune mechanism, and “sensitivity” is often used as a broader term when a dog simply doesn’t seem to do well with a particular ingredient.
For the person living with the itchy dog, that distinction may seem academic. You just want your dog to feel better. But it becomes important when we start trying to identify the problem, because scratching alone doesn’t prove a true food allergy—and randomly removing ingredients doesn’t tell us much either.
This is also where chicken gets hauled back into court.
Imagine a dog eating chicken-based kibble. He gets chicken jerky for a treat, a dental chew containing poultry ingredients and perhaps a supplement or medication with chicken flavoring. Even the “beef” or “salmon” product in the cabinet may contain chicken somewhere farther down the ingredient list. That dog has a tremendous amount of exposure to one protein.
Could chicken genuinely be his problem? Absolutely.
But that’s very different from saying itchy dog = chicken allergy.
We need clues. We need patterns. And when a true food allergy is suspected, we may need a properly controlled elimination diet under veterinary guidance rather than another random spin through the pet food aisle.
The Gut-Skin Connection
Now we get to one of my favorite rabbit holes.
The digestive tract and the skin may seem like completely separate systems, but the body doesn’t operate in neat little departments. Both the gut and skin act as important interfaces between the body and the outside world, and both are home to complex communities of microorganisms. Researchers continue to study the relationship among the gut microbiome, immune function and skin health—often referred to as the gut-skin axis.
This is fascinating stuff, but it’s also an area where I think we have to resist turning an interesting piece of biology into the answer for every itchy dog. Does every itchy dog have “leaky gut”? No. Does every itchy dog need a probiotic? No. Is there one magical supplement that fixes the microbiome and makes every skin problem disappear? If there were, trust me, we’d all know about it by now.
What the gut-skin connection does reinforce for me is the importance of looking at the whole dog. I want to know not only what the skin looks like, but how the dog is digesting food. What are the stools like? Has the dog had repeated antibiotics or other medications? Has the diet changed over and over? Are there gastrointestinal symptoms alongside the skin issues? Is the dog eating a varied diet or the same handful of ingredients every day?
Those details don’t automatically give us a diagnosis, but they can give us context. Nutrition, digestion, immune function, the microbiome and the skin aren’t independent little islands. It’s one dog.
And while we’re here, let’s talk briefly about yeast because it gets its own share of internet mythology. Yeast normally lives on canine skin. Its presence alone does not mean something has gone terribly wrong, but certain conditions can allow it to overgrow. An affected dog may have itching, redness, greasy or discolored skin, recurrent ear trouble or a distinctive odor.
That does not automatically mean “carbs are feeding the yeast,” and stripping every carbohydrate from the bowl doesn’t explain why that dog’s skin environment became unhappy in the first place. If yeast or a bacterial infection is suspected, this is where your veterinarian becomes an important member of the detective team. We need to know what we’re actually dealing with before we start treating the internet’s diagnosis.
Now, I am not a veterinarian, nor do I play one on TV. I’ve just… seen some things. After three decades in the pet nutrition business, I’ve talked with an awful lot of people about an awful lot of itchy dogs.
Please Stop Playing Ingredient Whack-a-Mole
This is one of the biggest mistakes I see well-meaning pet parents make.
The dog starts itching, so we remove chicken. Still itchy? Remove beef. Still itchy? Lose the grains. Then potatoes. Then peas. Pretty soon we’re standing in the pet food aisle looking for ethically sourced yak with organic turnips because apparently the dog can’t eat anything anymore.
That isn’t a plan.
If food genuinely appears to be contributing to the problem, I’d rather take a thoughtful, methodical approach. First, know what the dog is actually eating, and I mean everything: meals, treats, chews, toppers, supplements, table scraps and flavored medications. Then decide what you’re trying to learn before changing the diet.
A properly conducted elimination diet is one of the tools veterinarians can use to investigate adverse food reactions. The details matter. If you’re carefully eliminating a protein from dinner but somebody is still slipping the dog a treat containing that same protein every afternoon, we haven’t really eliminated anything.
And please don’t change six things at once.
If we change the food, shampoo, supplements, treats and flea product on Tuesday and the dog looks better three weeks later, what did we learn? Not much. We know the dog improved, which is wonderful, but we don’t know why.
This is where an itch diary can be surprisingly useful. Write down what the dog eats, including treats and chews. Note medications, supplements and unusual environmental exposures. Record where the dog is itching and whether ears, paws or digestion are involved. Take pictures when the skin changes.
You don’t need a color-coded spreadsheet—although some of us wouldn’t object.
Over time, you may discover that flares follow a certain treat, happen after daycare, appear when the lawn is treated, show up every September or mysteriously occur three days after somebody visits Grandma and develops temporary amnesia about the dog’s diet.
I’m much more interested in patterns than pointing fingers.
Exhibit A: Riptide
And this is where my own dog gets dragged into the blog.
If you’ve seen the pictures of Riptide’s boo-boo on his side or his poor unhappy tail, you know that I don’t dismiss food as a possible contributor to skin problems. In his case, food really was part of the problem.
That’s important, because I don’t want “don’t automatically blame the food” to be misunderstood as “food doesn’t cause skin problems.” Of course it can. I’ve seen it in clients’ dogs, and I’ve lived it with my own.
But Riptide’s experience is also exactly why I believe in looking for patterns instead of randomly eliminating ingredients. We had clues. We watched what happened. We paid attention to the dog standing in front of us and made changes based on him.
Riptide didn’t teach me that every itchy dog has a food problem. He reinforced something much more useful: you have to figure out which dog you have.
For one dog, food may be a major piece of the puzzle. For another, the environment may be driving the problem. Another may have food and environmental factors happening together. And yet another dog who appears to have a “nutrition problem” may actually have an infection, parasites or another medical condition requiring treatment.
Same symptom. Very different dogs.
When the Detective Needs a Veterinarian
Nutrition is my lane. Diagnosing disease isn’t.
If your dog is intensely uncomfortable, losing hair, developing sores or hot spots, has painful or recurring ear problems, broken or bleeding skin, a strong odor, or simply cannot stop scratching, licking or chewing, please get your veterinarian involved. Fleas and other parasites need to be considered, bacterial and yeast infections may need treatment, and there are other dermatologic and medical conditions that can cause itching.
This is especially important when the problem isn’t improving. You can correctly identify a dietary trigger and still have a dog with a secondary skin or ear infection that needs medical attention. Removing the original trigger doesn’t magically erase everything that happened afterward.
Remember our rule: what started the itch may not be what is keeping the dog itchy.
That single idea can save us an awful lot of frustration.
Feed the Dog in Front of You
If your dog suddenly starts itching, resist the urge to overhaul everything by dinner.
Look at where the dog is itching and when it started. Think about what changed. Consider the environment. Read the ingredient lists on the treats and chews, not just the main food. Pay attention to digestion and ears. Take pictures. Keep notes. If you change the diet, know why you’re changing it and what you’re watching for. And when the skin is painful, infected-looking, smelly, broken or simply not getting better, bring your veterinarian into the conversation.
Most importantly, don’t let an internet list convince you that every itchy dog needs the same solution. Your neighbor’s dog isn’t your dog. The dog in the Facebook group isn’t your dog. Riptide isn’t your dog.
Sometimes it really is the food. Sometimes it isn’t. Sometimes several things pile on top of one another until the dog’s body finally says, “Enough.”
We don’t need to find a villain. We need to find the pattern.
We don’t need perfection. We need to feed the dog in front of us.
And before you throw poor chicken in jail?
Give him a trial first.
Rachel McGinnis is a Certified Pet Nutrition Specialist and owner of Leo & Lucky’s. Naturally Speaking with Rachel explores practical pet nutrition, ingredients and the everyday questions pet parents bring through our doors.
