Should I buy my dog a jumper? Expert advice on when your adorable pup could do with a hand to stay warm this winter
Even our furry friends can get cold sometimes.
With temperatures dropping across the UK and frosty mornings becoming a regularity, veterinary experts are warning that many dogs are more vulnerable to cold stress than owners realise especially during daily walks.
To help out vet nurse Rachel Garbutt from Butternut Box has shared evidence-based guidance on how dog jumpers can play a crucial role in protecting dogs’ comfort, mobility, and overall well-being during winter.
Rachel explained: “Dog jumpers support comfort in cold weather when the temperature drops. Some dogs lose heat fast, especially if they are senior, have short coats, or are smaller frame. A jumper keeps their core warm during short walks and prevents stiffness when they are out in colder air.
“Dogs respond to winter at their own pace. A husky will relish a frosty morning. A whippet might feel uncomfortable in minutes. Owners who watch for early signs of cold keep their dogs safer. A warm layer supports comfort and keeps daily exercise stress-free.”
Here’s what dog owners need to know.
What types of dog should wear a jumper?
Different dogs react to the cold in different way - with some benefiting from wearing a jumper.
Cold weather puts pressure on smaller, thinner, or older dogs. Even dogs with excellent natural insulation can become hypothermic if their fur is saturated. A waterproof layer maintains the fur's insulating power, acting as a crucial barrier against wind and rain on longer walks.
- Lean and Short-Haired Breeds: Dogs like Greyhounds, Whippets, Boxers, and Vizslas lack the insulating fat and dense undercoat to retain heat effectively. Once the temperature dips to about 10°C, these dogs may need a waterproof coat to prevent rapid heat loss and subsequent muscle stiffness.
- Small and Toy Breeds: Due to their small body mass and high surface-area-to-volume ratio, smaller breeds (like Chihuahuas and Yorkshire Terriers) lose core heat faster than larger breeds. A properly fitted coat helps these breeds maintain their vital core temperature during brief outdoor excursions.
- Older Dogs and Joint Health: For senior dogs and those with arthritis, cold weather exacerbates pain by reducing circulation and tightening muscles. For these patients, a good-quality coat is part of their clinical management, helping to minimise stiffness and improve mobility throughout the season.
Signs your dog might benefit from a jumper
Many owners wait for obvious shivering before adding a jumper. Dogs give earlier clues, and spotting them makes a big difference to their comfort.
Clear signs include:
- Shortened stride on walks: Dogs that feel cold often tighten their muscles. They take smaller steps and try to keep their body compact.
- Hesitation at the door: If your dog pauses before stepping outside or tries to stay close to you, they might be bracing for the cold.
- Frequent stop-and-start behaviour: Dogs slow down when they lose body heat. They pause more often because their muscles feel stiff or uncomfortable.
- Holding their tail lower than usual: A dog that holds their tail closer to the body is trying to preserve warmth. It is a subtle sign, but it appears early.
- Lifting paws on colder ground: Cold pavements pull heat fast. Dogs lift their paws to reduce contact, and a jumper often helps them stay comfortable for longer.
- Seeking body contact: Some dogs lean into your legs or try to press against your coat when they feel the cold. They want warmth and reassurance.
- Shivering, even lightly: Light shivers mean heat loss is already happening. A jumper helps stabilise their temperature so they stay relaxed.
When you see these signs, a jumper gives your dog steady support outdoors. It protects their muscles, keeps their energy stable, and helps them enjoy the walk instead of rushing back home.
Finding the perfect fit and fabric
Even the cosiest jumper won’t help if it doesn’t fit properly. Measure your dog’s neck, chest, and back length to ensure the garment isn’t too tight or restrictive. Stretchy, soft fabrics like merino wool or cotton blends provide warmth without overheating and allow for natural movement. Look for jumpers with flexible hems and openings so they don’t interfere with walking, running, or bodily functions.
When layering over a harness or collar, pick styles that accommodate attachments without rubbing or discomfort. A jumper should feel like a gentle hug, not a constraint!
Choosing a jumper that matches your dog’s personality, like a festive pattern or a favourite colour, turns winter walks into an adorable fashion moment while keeping them snug and happy.
When to ditch the jumper
Dog jumpers and coats are fantastic for keeping pups warm, but they’re not meant to be worn all the time. If your dog is playing, running, or indoors, they can generate plenty of heat, and leaving a jumper on could cause discomfort or even overheating. Think of jumpers as seasonal helpers and use them outside for short periods to prevent shivering, then remove them once your dog is back inside. Always watch your dog’s behaviour; if they’re shivering, hunching, or trying to wriggle out, it’s time to take it off.
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