How to Tell If Your Dog Has a Double Coat

If you can part the fur and see skin straight away, you don’t have a double coat. Everything else in this guide is detail. The two-layer setup that owners argue about online – the soft undercoat, the coarse guard hairs – is meant to be obvious once you know where to look. Most owners just don’t look in the right place.

Part the fur against the grain, on the shoulder or the back of the thigh. If you see a soft, dense fluff layer underneath the longer guard hairs before you reach skin, your dog has a double coat. Three other signs confirm it: a brush pile with two distinct hair textures, an undercoat that stays damp long after the topcoat dries, and a heavy seasonal blow in spring and autumn.

Getting this right matters more than it sounds. Coat type changes the brush you buy, the bath schedule, the dryer you need, the haircut you should never get and the parasite check you have to do more carefully. A staffy and a kelpie that look similar in size carry completely different coats, and they need different routines. Reading this once saves a lot of guessing later – and stops the most expensive mistake of all, shaving a coat that wasn’t supposed to be shaved.

The two-minute test you can do right now

Stand the dog side-on. Pick a calm patch – the shoulder blade or the back of the thigh works best because the coat sits clean and flat there. Now part the fur against the direction of growth, slowly, with your fingers spread wide.

You’re looking for what sits underneath the long outer hairs. A single-coated dog shows skin almost straight away, often after one parting motion. A double-coated dog shows a second layer first – short, dense, sometimes paler, with the texture of cotton wool or fine sheep fleece. The guard hairs above it feel coarser and lay flatter; the undercoat is the softness underneath that you have to physically push aside to reach skin.

Do the test in two or three different spots, including a spot near the rump. Sometimes the back is single-coat and the flanks are not, especially in mixed-breed dogs. If three spots all show that fluffy second layer, you have a double coat.

What a double coat actually is

A double coat is two layers doing two different jobs. The top layer is the guard hair – longer, coarser, water-shedding, the part most people see when they look at the dog. The bottom layer is the undercoat – soft, dense, often a different colour, and the part doing all the temperature work. It traps air close to the skin and lets the dog regulate against both cold and heat. That’s why the rule that ‘double-coated dogs are only for cold climates’ is wrong – a properly maintained undercoat actually helps a husky cope with an Aussie 35°C summer, not the other way around.

A single coat is just the top layer. The hairs all behave the same and there’s no fluffy insulation underneath. Maltese, bichons and standard poodles are the textbook examples. Curly-coat crosses sit in their own grey zone, which we’ll come back to.

Three more signs that confirm it

The part-and-look test is the cleanest single check. These three confirm it.

1. The brush pile has two textures

Brush the dog for five minutes, then pull the fur out of the brush and roll it between your fingers. A double coat produces two distinct hair types in the pile – longer, slightly wavy or straight guard hairs and a softer, almost felted fluff of undercoat that clumps together. A single coat produces one type, evenly. If the pile feels like a single, uniform tuft, you’re likely single-coated.

2. The undercoat stays wet

After a bath, run your fingers down to the skin in three places. On a single-coated dog the fur dries top-down at roughly the same rate. On a double-coated dog the guard hairs feel touch-dry well before the undercoat does – the soft layer holds water against the skin and can stay damp for hours if you don’t force-dry it. This is also the mechanism behind hot spots, which is why drying technique matters more on a double coat than on a single.

3. The seasonal blow

Double-coated dogs shed their undercoat in heavy bursts twice a year – a big push in spring (September to November in AU) and a smaller one in autumn (March to May). If you’ve had a four-week stretch where the vacuum bag fills daily and the coat looks patchy in clumps, you’re seeing a coat blow. Single coats shed at a low, steady rate year-round and don’t do this. (For the full management routine, see our dog shedding season guide once it goes live.)

AU breeds that almost always have a double coat

If your dog is one of these, you can usually skip the testing.

• Cold-climate working breeds: husky, malamute, samoyed, Akita, chow chow.
• Retrievers and gun dogs: golden retriever, labrador, flat-coat retriever, Newfoundland.
• Working and herding: German Shepherd, border collie, Bernese mountain dog, corgi.
• Long-double coats: rough collie, briard, Tibetan terrier.
• Australian breeds: kelpie, Australian cattle dog and the old-style Aussie shepherd all carry a true double coat that drops heavily in spring.

Labradors throw a few people off because the topcoat is short. The undercoat is still there – part the fur on the rump after a swim and you’ll feel it.

Single coats (and the trickier crossbreeds)

These are the ones that almost always test single. The fur lies close to the body, the part-and-look shows skin quickly, and shedding stays at a low simmer all year. Standard poodle, miniature poodle, maltese, bichon frise, shih tzu, Yorkshire terrier, greyhound, Italian greyhound, boxer, staffy, Dalmatian, vizsla.

Then there are the crossbreeds. A cavoodle is technically single-coated because the poodle parent dominates the coat genetics, but the curl traps loose hair instead of dropping it, which is why people mistake them for low-shedding double coats. Spoodles, groodles and labradoodles split inheritance unpredictably – you genuinely can’t tell from the breed name. Test individually with the part-and-look.

Short-coated mixes are the other grey zone. A staffy-cross is almost always single, but a kelpie-staffy can carry enough undercoat to surprise you. See our notes on short-coated breeds for context, and just do the test.

Why coat type changes your grooming routine

Three things shift the moment you confirm a double coat.

• Tools. You need an undercoat rake (Furminator or Mars Coat King) and a slicker brush. A bristle brush will never reach the undercoat – it skates across the guard hairs and feels productive without doing anything.
• Frequency. Double coats need a weekly brush all year and a daily brush through the spring blow. Single coats can sit on a fortnightly schedule for most of the year and a weekly brush for the curly crossbreeds.
• Drying. A double coat needs a force dryer on low heat or a properly thorough towel-and-brush dry. A wet undercoat is the textbook setup for a hot spot in humid weather, especially in QLD and northern NSW.
• The one rule that’s the same regardless. Don’t use human shampoo or conditioner – the pH is wrong for both coat types.

If you book a professional, look for a groomer accredited through the Pet Industry Association of Australia – the clearest accreditation signal an AU owner has to go on. They’ll know not to shave the coat.

The myths owners get wrong

• ‘Double coats are only for cold climates.’ They’re thermoregulating in both directions. A maintained double coat handles AU summer better than the bare skin underneath would.
• ‘Shaving will help my dog cool down.’ It won’t. AU groomers warn that shaved double coats can grow back patchy or with permanently damaged texture – a condition called post-clipping alopecia.
• ‘No shedding means single coat.’ Not always. Curly crosses like cavoodles trap loose hair in the coat instead of dropping it. The dog still sheds; the fur just stays put until you brush it out.
• ‘My groomer says she can shave him for summer.’ Find a different groomer. The AVA position on companion-animal coat care is unambiguous: the double coat is a working system, not decoration.
• ‘All double coats blow heavily.’ Most do. A few short double-coats (labrador, beagle) shed steadily rather than in dramatic clumps. The seasonal pattern is real but the volume varies.

FAQ

Once you’ve confirmed the coat, write it on the dog’s vet card. ‘Double-coated – do not shave’ in the notes saves a stressed groomer or locum vet from making a call they’ll regret. It’s a 30-second job and it’s the most useful thing most owners never do.