A winter coat isn’t necessary for every dog. Many healthy, medium- to large-sized dogs with a dense undercoat can handle cold temperatures without extra protection. However, there are situations and certain types of dogs for which a functional, breathable winter coat or blanket is useful—or even recommended—especially to keep the skin healthy and prevent irritation caused by moisture or trapped heat.

Which dogs benefit most from a winter coat?

The following dogs are particularly at risk of getting cold or developing skin problems:

• Small dogs: They lose heat more quickly because of an unfavorable ratio of body surface area to body volume.
• Short-haired or hairless dogs: Breeds without an undercoat (e.g., Greyhounds, Pinschers, Dalmatians) have little natural protection against the cold.
• Older dogs: As dogs age, their muscle mass and metabolic activity decrease, reducing heat production.
• Dogs that are sick or recovering: Conditions such as arthritis, heart problems, or metabolic disorders reduce tolerance to cold.
• Dogs from warmer regions: Animals originally from southern countries are often genetically less adapted to cold winters.

Choosing the right coat for the weather

Not every coat is suitable for every weather condition. With breathable winter coats, it is especially important to strike a balance between warmth and moisture management to keep the skin healthy.

Transitional periods and cool weather

At temperatures just above freezing, or in windy or wet conditions, usually a:

• lightweight, wind- and water-resistant coat

• breathable dog sweater

…is sufficient. Here, the focus is on protection against the wind and moisture. Breathable materials prevent sweat or condensation from building up under the coat, which could irritate the skin.

Freezing temperatures and snow

For severe frost or prolonged exposure to snow, a:

• insulated winter coat

• warm, breathable sweater

…is recommended. Make sure the coat not only keeps your dog warm but also allows moisture to escape, preventing skin irritation and overheating. Dogs are particularly sensitive in the belly and chest areas, where there is little muscle protection.

Unpredictable winter weather

For fluctuating temperatures, coats with removable inner fleece are ideal. They allow for flexible layering without having to carry multiple coats and protect the skin with breathable materials.

Key criteria for a good winter coat

A functional dog coat should not only provide warmth but also support skin health:

• Fit: The coat should fit well, not chafe, and not restrict movement. The armpits, neck, and belly are particularly sensitive areas.
• Freedom of movement: The shoulders and spine must not be restricted.
• Breathability: High-quality materials wick away moisture, prevent heat from building up, and protect the skin from irritation.
• Material quality: Water-resistant outer fabrics combined with warm, skin-friendly inner materials are more functional than purely decorative fabrics.
• Individual needs: Activity level, walk duration, and the dog’s personal sensitivity to cold are more important than general temperature guidelines.

A breathable winter coat or blanket reduces the risk of skin irritation, keeps the coat dry, and supports the skin’s natural protective function.

Conclusion

A dog coat is not a fashion accessory—it is a health-related aid. When used correctly, it can significantly improve a dog’s well-being and skin health. Whether a coat is necessary depends on the individual dog, its physical condition, and the environmental conditions.

If you're unsure, watch your dog closely: shivering, stiff movements, or avoiding activity can be signs that your dog is cold. If you have questions, veterinarians or experienced pet store staff can offer guidance, as general recommendations don't apply to every dog.

Extra tip: Choose breathable, moisture-wicking materials that protect your dog’s skin without restricting movement. This keeps your dog healthy, warm, and active all winter long.