Dog food allergies

Food plays an important role in your dog's wellbeing. So if they've developed skin concerns or sensitive digestion, it's natural to wonder whether something in their diet could be contributing.

Food allergies in dogs are relatively uncommon, but understanding the signs can help you decide when it's time to speak to your vet. In this guide, we'll look at common triggers, the signs to watch for and what to do if you have concerns.

What are dog food allergies?

Dog food allergies can happen when a dog's immune system reacts to a particular ingredient in their diet.

They can affect dogs of any age or breed, although some breeds, including West Highland White Terriers, Rhodesian Ridgebacks and Pugs, may be more prone.

Food allergies can show up through changes in the skin or digestion, so it's important to keep an eye on your dog's overall health and behaviour. If you're unsure whether food could be playing a part, speak to your vet.

As YuMOVE in-house vet Dr Fran explains:

"What your dog eats can affect their wellbeing in lots of different ways. If they have sensitive digestion or skin concerns, it could be linked to something in their diet. Your vet can help you explore this further."

What are food intolerances in dogs?

Food intolerances are different from food allergies.

A food allergy involves the immune system reacting to a particular ingredient. A food intolerance can cause similar signs, but doesn't involve an immune response.

For example, some dogs find certain foods harder to digest than others, even if they aren't allergic to them. Lactose intolerance is one example, as many dogs find dairy difficult to digest.

Understanding the difference can help when discussing your dog's diet with your vet.

What are the most common food allergies and intolerances in dogs?

Dogs with food allergies are most commonly sensitive to proteins in their food. Research suggests beef is the most common trigger, followed by dairy, chicken, wheat and lamb. Other ingredients that have been reported include soy, corn, egg, pork, fish and rice.

While many foods are perfectly suitable for dogs, every dog is different. If you're introducing a new food, do so gradually and keep an eye on any changes in your dog's skin, digestion or behaviour.

Signs of dog food allergies

Food allergies can affect dogs in different ways, but the skin and digestive system are the areas most commonly involved.

Skin concerns

Skin-related signs are often among the first things owners notice. These may include:

• Itchy skin
• Excessive licking, chewing or scratching
• Red or irritated skin
• Changes in coat condition
• Recurring skin concerns

If your dog seems uncomfortable or is scratching more than usual, it may be worth considering whether food could be contributing.

Want to learn more? Take a look at:

• Why does my dog keep itching?
• Dog skin allergies guide

Digestive concerns

Some dogs experience digestive signs alongside, or instead of, skin concerns. These may include:

• Loose stools
• Vomiting
• Flatulence
• Sensitive digestion
• Changes in appetite
• Changes in weight

If you've noticed changes in your dog's digestion, it may be helpful to review their diet and discuss any concerns with your vet. You may also find these guides helpful:

• Upset stomach in dogs
• Dog poo chart

Other signs

Less common signs can include:

• Changes in energy levels
• Restlessness
• Repeated paw licking or chewing

These signs can have a range of causes, which is why it's important to look at the bigger picture rather than focusing on one sign alone.

What should you do if you think your dog has a food allergy?

If you think your dog may have a food allergy or intolerance, it's always best to speak to your vet first. They may recommend:

• Keeping a food diary to help identify patterns
• Avoiding ingredients that have previously caused concern
• Introducing dietary changes gradually
• Exploring whether an elimination diet may be appropriate
• Trying a hydrolysed diet under veterinary guidance

Making several changes at once can make it harder to work out what's causing the concern, so it's often best to take a structured approach.

If you're concerned that your dog may have a food allergy or intolerance, speak to your vet. They can help identify the cause and advise on the most appropriate next steps.

Supporting your dog's wellbeing

Every dog is different, and food allergies can sometimes look similar to other concerns. The good news is that, with the right support, many dogs can continue to enjoy a happy, healthy life.

And don't forget, if you have concerns about your dog's skin, digestion or overall wellbeing, please talk to your vet.

You can also read our complete guide to common dog health concerns.