A Guide to Zinc Deficiency in Dogs: Symptoms, Causes and Treatment

Zinc is one of the essential nutrients that plays a crucial role in your dog's overall health. While other vitamins and minerals support energy and activity, zinc for dogs is vital for maintaining a robust immune system, healthy skin, wound healing, and normal thyroid function.

In fact, zinc is known to be involved in more than 300 bodily processes in dogs. A zinc deficiency in dogs can sometimes lead to a range of health issues – so let's get into everything you need to know.

What Causes Zinc Deficiency in Dogs?

Dogs can get the necessary amount of dietary zinc through their regular diet. Foods naturally high in zinc – especially when consumed raw – include beef, buffalo, chicken, lamb, pork, and sardines. However, if your dog is a picky eater, or these options are not suitable, you can find various dog foods and treats fortified with zinc.

When selecting these products, try to look for a few typical forms of zinc like zinc citrate and zinc methionine. These are generally considered among the best types of zinc for canine absorption, as they are more bioavailable than some other forms.

It's also worth noting that certain dietary factors can interfere with zinc absorption in dogs. High levels of calcium, phytates (found in plant-based protein sources) and iron in the diet can all reduce how effectively your dog absorbs zinc – even if their food technically contains adequate amounts.

Some breeds are also genetically predisposed to zinc malabsorption, including Siberian Huskies, Alaskan Malamutes, and Samoyeds. Large and giant breeds such as Great Danes, German Shepherds, and Labrador Retrievers that are rapidly growing during puppyhood can also be at elevated risk.

What Happens with Zinc Deficiency in Dogs? Signs and Symptoms

Zinc deficiency can lead to several health issues in dogs. The most common is zinc-responsive dermatosis – a skin condition in dogs directly caused by insufficient zinc levels in the body.

Early symptoms of zinc deficiency in dogs include:

• Erythema (redness) and crusting of the skin, often symmetrically around the eyes, muzzle, paws, and groin.
• Hair loss (alopecia) around the face, ears, and pressure points like the elbows.
• A dull, dry, or lacklustre coat.
• Thickened or scaly skin patches.

Many dog owners may mistakenly dismiss zinc-responsive dermatosis as a typical dog skin condition that can be remedied with topical treatments. However, if left untreated, it can compromise your dog's immune system, making them more susceptible to secondary bacterial or yeast infections.

A weakened immune system may also manifest as digestive issues, including diarrhoea and decreased appetite. This lack of appetite can prevent your dog from receiving other essential nutrients, potentially leading to further complications, including flu-like symptoms and organ dysfunction.

This is why it's critical to address signs of zinc deficiency in dogs at the earliest stages, rather than treating the skin symptoms alone.

How Can You Prevent and Manage Zinc Deficiency in Dogs?

There is no one-size-fits-all treatment for zinc deficiency in dogs, as it varies based on the symptoms present. So, it's always important to speak to your vet first. Typically, treatment involves addressing any secondary infections while simultaneously working to correct the underlying zinc deficiency.

Key management approaches include:

• Transitioning to a high-quality, nutritionally balanced dog food that contains adequate zinc levels.
• Avoiding diets high in phytates or excess calcium that may block zinc absorption.
• Zinc supplementation for dogs, using well-absorbed forms such as zinc methionine, zinc gluconate, or zinc sulphate.

One of the most effective ways to prevent zinc deficiency in the first place is to incorporate a daily dog multivitamin or zinc supplement into your dog's routine – particularly for breeds with a known predisposition, or dogs on restricted diets.

FAQs

What are the signs of zinc deficiency in dogs?

The most common sign of zinc deficiency in dogs is a skin condition called zinc-responsive dermatosis. Symptoms of zinc-responsive dermatosis include redness, crusting, and scaling around the eyes, muzzle, paws, and groin, along with localised hair loss (also known as alopecia). 

Dogs affected by this may also have a dull, dry coat and become more susceptible to secondary skin infections. In more advanced cases, zinc deficiency can affect the immune system, causing digestive issues, reduced appetite and slow wound healing. If you notice these symptoms, it's important to consult your vet rather than treating the skin with topical products alone.

What dog breeds are most prone to zinc deficiency?

Certain dog breeds are genetically predisposed to something called zinc malabsorption. This essentially means that they may struggle to absorb the right amount of zinc from their diet, even when zinc intake is technically enough. 

Siberian Huskies and Alaskan Malamutes are the most well-documented examples. But, Samoyeds are also commonly affected dog breeds. Large and giant breeds, including Great Danes, German Shepherds, Labrador Retrievers and Standard Poodles can also be at increased risk because they undergo rapid growth when they're puppies.

Owners of these dog breeds should speak to their vet about whether zinc supplementation is appropriate as a preventative measure.

What foods are high in zinc for dogs?

The best natural dietary sources of zinc for dogs, include red meats such as beef, lamb, and buffalo, as well as poultry (chicken), pork and oily fish like sardines. These foods are particularly beneficial when fed raw or minimally processed, as cooking and processing can reduce zinc bioavailability.

If these options aren't suitable for your dog, look for dog foods fortified with zinc – specifically those containing highly absorbable forms like zinc methionine or zinc citrate.

Be aware that high levels of calcium, iron, or phytates (found in plant-based proteins) in the diet can block zinc absorption even when intake appears adequate.

How is zinc deficiency in dogs treated?

Treatment for zinc deficiency in dogs typically involves two key things; correcting the underlying deficiency and addressing any secondary infections that have developed as a result. 

Your vet may recommend switching to a higher-quality, zinc-rich diet, that reduces dietary factors that block zinc absorption (such as high-phytate or high-calcium foods) and starting oral zinc supplementation. 

Commonly used forms include zinc sulphate, zinc methionine and zinc gluconate. In most dogs, overall improvement can be seen within a few weeks to months of starting supplementation – though some breeds with genetic zinc absorption issues may require lifelong zinc supplementation to remain symptom-free.

Can I give my dog zinc supplements to prevent deficiency?

Yes – zinc supplements for dogs can be an effective way to prevent deficiency, particularly in at-risk breeds or dogs on restricted diets. 

The safest approach is to use a daily dog multivitamin that includes zinc alongside other essential vitamins and minerals, rather than giving a standalone high-dose zinc supplement. 

This helps avoid the risk of overdose, which – while rare from food or standard supplements – can occur if concentrated zinc products are given incorrectly. 

Always follow dosage guidelines based on your dog's weight and speak to your vet before starting supplementation, especially if your dog is already showing symptoms of zinc deficiency.

To Sum Up

From what a zinc deficiency in dogs actually is to the breeds it can affect the most and the supplements that can help, we've covered it all.