7 Common Signs of Allergies You Might Be Missing in Your Dog

It’s no secret—we love our dogs! They’re family, and we want to make sure they’re healthy, happy, and comfortable. But what happens when your dog starts scratching more than usual, or their tummy seems upset out of nowhere? The issue might actually be allergies.

If allergies sound a bit far-fetched for dogs, think again. Just like humans, dogs can suffer from allergies that trigger a range of symptoms. The tricky part? These signs might be subtle, or easily mistaken for other things.

Whether you’ve got an itchy Labrador or a sneezy Dachshund, this guide will help you spot the common signs of canine allergies you might be overlooking—and explain how supplements like probiotics and salmon oil can work wonders for their health!

Allergies in dogs happen when their immune system overreacts to certain triggers (called allergens). These allergens can vary and typically fall into three categories:

• Environmental Allergies: Things like pollen, mould, dust mites, or even grass.

• Food Allergies: Proteins in certain foods, including chicken, beef, dairy, or grains.

• Flea Allergy Dermatitis: A reaction to flea saliva when they’ve been bitten.

While some breeds are more prone to allergies (hello Bulldogs and Retrievers!), all dogs can develop them at any point in their lives.

Dogs can't tell us directly when something's wrong—no matter how much we wish they’d just speak up! While some symptoms, like constant itching, are easy to spot, others can be much more subtle. This is why it’s so important to understand the signs of allergies. Catching them early can greatly improve your dog’s quality of life and even save you money on long-term treatments.

Constant scratching or licking is one of the first signs of allergies in dogs. While all dogs scratch occasionally (it’s perfectly normal!), excessive behaviour might indicate a problem. Dogs with allergies often concentrate on their paws, belly, or ears—these are common areas where irritation flares up.

What might be causing it?

This could be due to flea allergies, food sensitivities, or environmental allergens like pollen or mould.

What to do:

Start by using a flea prevention product to rule out flea bites. If your dog still seems itchy, consult your vet. They may suggest a food trial or allergy test.

Does your dog frequently shake their head or show signs of discomfort around their ears? This could be more than just a minor issue. Many dogs with allergies develop recurring ear infections. You might notice redness, a bad smell, or discharge from their ears.

What might be causing it?

Allergies can lead to excess moisture and wax build-up in the ears, which creates the perfect breeding ground for bacteria and yeast.

What to do:

Keep your dog’s ears clean and dry. If infections keep coming back, your vet might investigate underlying allergies.

Skin issues are a major indicator of allergies in dogs. Look out for red, inflamed patches on your dog’s skin—these are commonly referred to as “hot spots.” Sometimes, the skin may even appear scaly or develop rashes.

What might be causing it?

Food allergies or seasonal allergens are often to blame.

What to do:

Keep an eye on changes to their skin during different seasons. Switching to hypoallergenic dog shampoo or moisturising sprays can help relieve irritation, but in some cases, a change in diet may be required.

Dogs with allergies don’t just show symptoms through their skin. If your dog struggles with chronic diarrhoea, vomiting, or excessive gas, it could be a sign of a food allergy or intolerance.

What might be causing it?

Proteins like beef, chicken, or dairy are some of the most common culprits. Sometimes, grains or preservatives in dog food can also play a role.

What to do:

Ask your vet to guide you through an elimination diet. This involves switching to a different kind of food, such as one with novel proteins (like duck or kangaroo), to see if symptoms improve.

Does your dog seem like they’re sniffing constantly or look teary-eyed? While this can sometimes be linked to breed traits (like in pugs and bulldogs), it’s also a potential sign of allergies.

What might be causing it?

Environmental triggers like dust, pollen, or pollutants could be irritating your dog’s nasal passages and eyes.

What to do:

Ensure your home is as clean as possible—vacuum regularly and wash their bedding. You can also try wiping down your dog’s fur after outdoor walks to minimise exposure to irritants.

If your dog sounds like they’re participating in a sneezing marathon, don’t brush it off as a cute quirk. Frequent sneezing or coughing can indicate respiratory allergies.

What might be causing it?

Dust mites, mould, or even perfumes you use around the house could be the source of your dog’s discomfort.

What to do:

Use an air purifier to reduce airborne allergens in your home, and be mindful of using heavily fragranced cleaning products or sprays.

When dogs feel unwell, their behaviour often changes. If allergies are making your dog miserable, you might notice them becoming more withdrawn, restless, or even aggressive. Allergies can cause discomfort that affects their mood.

What might be causing it?

Anything from chronic itching to digestive upset can take a toll on your dog’s emotional well-being.

What to do:

Pay close attention to any unusual behaviour. If your dog seems down, it’s time for a vet visit.

Once you’ve spotted one or more of these signs, the next step is addressing the issue:

1. Consult Your Vet – They can diagnose allergies and recommend treatment options. This might include antihistamines, prescription diets, or allergy shots.

2. Consider Allergy Testing – Your vet can perform tests to identify specific triggers.

3. Switch to Hypoallergenic Products – This includes shampoos, food, and even cleaning products.

4. Maintain a Clean Environment – Reduce exposure to dust, pollen, and other allergens.

Some of the best solutions aren't just about removing allergens—it’s about strengthening your dog from the inside out. That’s where supplements come in!

Did you know that your dog’s gut health plays a huge role in their immune system? Probiotics introduce beneficial bacteria that help balance your dog’s gut microbiome.

• Why it helps allergies: A strong gut can reduce food sensitivities, improve digestion, and even lessen skin issues related to gut imbalances.

• How to use it: Look for dog-specific probiotic supplements or foods fortified with live cultures.

Salmon oil is packed full of omega-3 fatty acids, which are anti-inflammatory and fantastic for your dog’s skin and coat.

• Why it helps allergies: It soothes itchy skin, reduces inflammation, and promotes a shiny, healthy coat.

• How to use it: Add a drizzle to your dog’s food daily (most dogs love the taste!).

• Clean their environment: Wash bedding regularly, vacuum often, and use allergen-reducing sprays to keep your home clean.

• Regular grooming: Frequent baths with hypoallergenic shampoo can soothe your dog’s skin and remove allergens from their fur.

• Flea control: Stay on top of flea prevention, as flea allergy dermatitis is one of the most common triggers for dogs.

Your dog deserves the best care, and recognising the signs of allergies is a huge step towards improving their quality of life. From making small dietary changes to introducing supplements like probiotics and salmon oil, there are plenty of ways to help your pup feel their best.

If you’re ready to take your dog’s health to the next level, why not give supplements a try? A healthier, itch-free life might just be a chew or scoop away!