Are Sweaters Good for Dogs? A Fall and Winter Guide

Some dogs need a sweater once the temperature drops. Others are better off without one, and a knit on a husky in October is more likely to overheat him than help him. The dividing line is coat and body size. Dogs with short or single coats feel the cold first and get the most from a sweater, along with small dogs and older dogs. Dogs bred for cold weather carry their own insulation and rarely need one. Veterinary cold-weather guidance from the American Veterinary Medical Association puts the comfort line for small, thin-coated and senior dogs around 45°F, and treats below-freezing temperatures as unsafe for long stretches outdoors for most dogs.

If your dog shivers on the first cold walk of the year, or he is small, thin-coated or getting older, a sweater is the least expensive piece of gear you can add to his routine. Here is how to choose one that fits, and how to tell when he does not need it at all.

Which Dogs Actually Need a Sweater

Four groups get the most from a fall layer, and they are rarely the dogs people picture when they think about winter gear.

• Short and single-coated breeds. Greyhounds, Whippets, Boxers, Dobermans, Chihuahuas and Dachshunds have little between their skin and the air. A knit layer does what their coat cannot.
• Small dogs. A Chihuahua has far more skin surface relative to its body volume than a Labrador, so it sheds heat faster and feels a cold morning sooner.
• Older dogs. Arthritis stiffness gets worse in the cold, and a dog carrying extra weight or managing a heart condition struggles to regulate temperature the way he used to.
• Dogs who shiver, tuck their tail, or ask to turn around. Behavior is the most honest signal you have, and it beats any breed chart.

Which Dogs Usually Don't

Double-coated breeds are built for this. Siberian Huskies, Alaskan Malamutes, Newfoundlands, Samoyeds and most German Shepherds trap a layer of warm air against the skin with their undercoat, and a sweater flattens that layer instead of adding to it. On a long walk in real cold they are fine. Inside a heated house in a sweater, they are not.

Watch for the reverse signal instead: heavy panting on a cool day, or a dog working to wriggle out of the sweater. Double-coated dogs also tend to mat under knitwear, which is its own reason to skip it.

How to Tell Your Dog Is Cold

Dogs do not tell you in words, but the signs are consistent once you know them.

• Shivering that continues after the walk starts
• Lifting one paw and holding it off the ground
• Tail tucked, body hunched, head lowered
• Stopping mid-walk or turning back toward the house
• Curling into a tight ball on the couch instead of sprawling

Cold ground matters as much as cold air. A dog who is fine in a sweater on grass can still be lifting his feet on frozen pavement, and booties solve a problem a sweater cannot.

What to Look For in a Fall Sweater

Fit comes before everything else

A sweater should be snug enough to stay put and loose enough to move in. Slide two fingers under the neckline. If they fit without stretching the knit, the neck is right. Then check the leg openings and the chest: any place the fabric pinches or rubs is a place your dog will work at until the sweater is off. Tags are the other common culprit. Look for tag-free construction or a tag that sits outside the garment.

Material matters less than you think

For dry fall cold, a knit works because it traps air and still lets moisture escape. Combed cotton stays soft against the skin and washes without pilling. Fleece is warmer per ounce and holds onto dog smell longer. Avoid heavy, non-breathing shells worn indoors for hours.

Getting it on without a fight

Slip-over sweaters go on over the head in one motion. Step-in styles ask your dog to put his feet through openings, which is easier for a dog who dislikes having anything pulled over his ears. If your dog is suspicious of clothing, start with the step-in and let him wear it around the house before you attach a leash.

Sweater or Coat?

The two solve different problems, and fall usually calls for both on the same walk. A sweater handles dry cold and the trip from a warm house to a cold street. A coat handles wind and wet, which is what makes the difference in November. Start with the sweater, since it works indoors and out, then add a water-resistant coat when the forecast turns to rain or sleet.

Cold-weather accessories earn their place too. A snood covers the neck and ears, keeps long ears out of the food bowl, and adds warmth in the one spot a sweater misses. The cotton dog snoodies are handmade in the USA, and they layer under any coat without adding bulk.

Sizing Without Guessing

Measure the neck, the chest at its widest point, and the length from the base of the neck to the base of the tail. Write the numbers down and check them against the size chart before you buy. Neck measurement is the one that decides most fits, which is why ours are listed that way: X-Small covers an 8 to 9 inch neck, Small covers 10 to 14 inches, Medium covers 14 to 18, and Large runs 18 to 24. A Yorkshire Terrier and a Labrador will never share a size, but a Beagle and a Shiba Inu usually can.

Our size guide has the full chart, and exchanges and returns are free if the first size misses.

Keeping It Clean

Knit cotton sweaters want a gentle cycle and a low tumble dry, which keeps them soft for several winters. Wash them on their own and skip the dryer sheet. Fleece can take a warmer wash but not a hot dryer, and either one air dries flat without losing its shape.

Questions Dog Owners Ask

Do dogs need sweaters in the fall?
Some do. Small dogs, short-coated breeds, seniors and dogs who shiver on a cool walk all benefit. Double-coated breeds such as huskies usually do not.

What temperature is too cold for a dog to wear a sweater?
A sweater helps most from about 45°F down to freezing. Below that, most dogs need a water-resistant coat over it and shorter walks.

How do I know if a dog sweater is too tight?
Try to slide two fingers under the neckline. If you cannot, it is too tight. Also check the leg openings and armpits for pinching, and look for rubbing marks after a thirty-minute wear.

Can a dog wear a sweater inside the house?
Yes, and many older or short-coated dogs like it, especially in a cool house. Take it off if your dog pants or tries to wriggle out of it.

Start With the One He'll Actually Wear

The best sweater is the one your dog stops noticing. Start with a dog sweater that matches his coat type and the temperatures you actually walk in, measure his neck before you order, and give him a few minutes indoors to get used to it. The Vintage Argyle Dog Sweater and the Red Plaid Dog Sweater both sit in the middle of the warmth range, which is where most fall walks land.