Best Brush for a Border Collie or Australian Shepherd
A Border Collie or Australian Shepherd needs two working surfaces, not one: a slicker with long pins for the dense body coat, and a comb for the feathering on the legs, tail, and britches. The feathering is the reason. It's finer, longer, and it mats differently than the body coat — and a tool aggressive enough to clear the undercoat on the ribs will break and pull it.
Most owners discover this the slow way, after buying a well-reviewed slicker, using it everywhere, and finding the tail and trousers steadily getting worse.
Two coats on one dog
Both breeds carry a medium-length double coat. The AKC describes the Border Collie as a working dog bred for stamina in weather, and the Australian Shepherd as a lean, tough ranch dog — both built to spend the day outdoors, both insulated accordingly.
The body coat is the straightforward part: dense undercoat, weather-shedding guard hairs over the top, seasonal turnover in spring and fall. Standard double-coat management.
The feathering is where it gets specific. Both breeds carry longer, softer hair on the back of the front legs, the britches at the back of the thighs, the tail, and the ruff around the neck and chest. Border Collies come in rough and smooth coats, and the rough-coated dogs carry considerably more of it. Aussies vary too.
That feathering has almost no undercoat. It's fine, it moves, it collects burrs and grass seed, and it mats close to the skin behind the elbows and in the britches — exactly the places you can't see without looking for them. It also breaks easily, which is why the aggressive tool that works well on the ribcage is the wrong choice six inches lower.
What to look for
Pins need to be long enough for the body coat — on a medium-length double coat the undercoat sits well below the surface, and short pins just ride on top.
Rounded tips and a forgiving action. These are dogs that need daily handling for weeks during a shed, and a tool that stings gets refused fast.
Then there's the comb, and specifically a comb with two tooth spacings: wide teeth to open feathering without tearing it, fine teeth for detail on the face, ears, and tail tip. This is the piece most owners skip.
Last, something to clear the brush itself. A slicker packed with undercoat stops working, and picking it out by hand is usually what kills the daily habit.
The body-and-feathering combination
If you already own a slicker that reaches the undercoat, the honest advice is to buy a comb and stop there. The slicker isn't usually the missing piece for these breeds — the comb is, and a decent stainless one costs very little. Only go for a set if your current slicker is too small for the dog, has pins too short to reach past the guard hair, or you don't have one at all.
For that case, the 3-piece slicker brush and comb set covers both jobs in one purchase, which is why it fits this coat better than a single brush.
The large slicker carries 504 stainless steel angled pins on a 3.1 × 2.8 inch (7.8 × 7 cm) pad, with the pins standing 0.8 inches (2 cm) proud. That depth is the number that matters on a herding coat — it reaches through medium-length guard hair into the undercoat rather than skimming. The head is large enough to cover a 45 lb dog's back and sides without turning the session into a marathon.
The stainless steel comb is 7.5 inches (19 cm) long with two zones: 26 wide teeth and 36 fine teeth. The wide end is the feathering tool. Work it through the britches, the back of the front legs, and the tail from the ends inward, and you'll find small tangles before they become mats. The fine end handles the face, the ear edges, the chin, and the tail tip — detail work where a slicker is too blunt an instrument.
The third piece is a cleaning brush that lifts the packed fur off the slicker pins. Small thing. It's also the difference between a five-minute session staying five minutes and quietly becoming a chore you skip.
One honest note on size: this is a large slicker, built for medium and large dogs with thick coats. On a small dog or a cat it's the wrong scale.
Order of operations: comb's wide teeth first to open anything tangled, then the slicker across the body, then the comb's fine teeth for detail. Going straight in with the slicker on a tangle tightens it.
If your dog packs a heavy undercoat
Some Aussies and rough-coated Border Collies carry more undercoat than a slicker can efficiently move during a full coat blow. If a twenty-minute slicker session is still leaving the coat feeling dense underneath, that's the signal to add a rake rather than to press harder.
The 2-in-1 undercoat rake with a 360° rotating comb is the version worth considering for these breeds specifically. One face is a rake blade 0.4 inches (1.1 cm) deep and 3.9 inches (10 cm) wide; the other has comb teeth 0.8 inches (2 cm) deep that rotate through 360° and flex under pressure.
The rotating teeth matter on a herding dog for a mundane reason: the densest coat on these breeds sits on the ruff and the britches, which are curved, and teeth that turn with the coat stay in contact where rigid teeth skip or snag.
But try the free option first. If the coat feels dense after brushing, brushing more often will usually clear it — daily short sessions during a blow rather than twice a week. Most Border Collie and Aussie owners never need a second tool beyond the set. Add the rake if frequency alone isn't keeping up, not before.
Quick decision
| Where | Tool | Notes |
|---|---|---|
| Back, sides, shoulders | Large slicker, long angled pins | The main body tool |
| Britches, leg feathering, tail | Comb, wide-tooth end | Fine hair — the slicker breaks it |
| Face, ears, chin, tail tip | Comb, fine-tooth end | Detail only |
| Slicker packed with fur | Cleaning brush | Keeps the daily habit alive |
| Very heavy undercoat during a blow | First: brush daily instead of twice weekly | Free. Try this before adding a rake |
| Still dense after that | Undercoat rake with rotating comb | Ruff and britches especially |
| Shaving in summer | Don't | Damages the topcoat; the undercoat insulates against heat too |
The seasonal part
Both breeds blow coat in spring and fall. Fall shedding is triggered by shortening daylight rather than cooler weather, so it usually starts in late summer while it's still warm — earlier than most owners expect.
During a blow, short daily sessions work better than one long weekly one, for the coat and for the dog. Between blows, once or twice a week keeps the feathering from quietly matting, which is the failure mode with these breeds. Nobody's Border Collie develops a mat on the ribcage. They develop them behind the elbows and in the britches, three weeks after the owner stopped checking.
Frequently Asked Questions
Q: Is a Border Collie's coat different from an Australian Shepherd's?
A: Close enough that the same tools work on both. They're both medium-length double coats with feathering, though Border Collies split into rough and smooth varieties — the smooth-coated ones carry much less feathering and are considerably less work — while Aussies generally run moderate to heavy with feathering on the legs and britches.
Q: How do I get a mat out of leg feathering?
A: Work from the outside in with the wide teeth of a comb, holding the hair above the mat so you're not pulling on skin. Small tangles come apart in a few passes. A mat that's tight against the skin, or one the dog reacts to, is better handled by a groomer than by force — the skin under feathering is thin and mats sit closer to it than they look.
Q: Do these breeds need professional grooming?
A: Not routinely for coat reasons; both are manageable at home with regular brushing. A groomer becomes worth it during a heavy blow if you're falling behind, or if matting has gotten ahead of you in the britches and tail. Ask for the coat to be de-shed and tidied, not shaved.
Q: My Aussie is shedding constantly, not seasonally. Is that normal?
A: It's common in dogs living indoors under artificial light and stable temperatures — the AKC notes that dogs in warmer places may shed four times a year or continuously rather than in two defined blows. What's worth checking is whether the coat is thinning evenly with healthy skin underneath, or whether there are bald patches or irritation, which is a different conversation and a veterinary one.
Sources
- American Kennel Club — Border Collie Breed Information (https://www.akc.org/dog-breeds/border-collie/)
- American Kennel Club — Australian Shepherd Breed Information (https://www.akc.org/dog-breeds/australian-shepherd/)
- American Kennel Club — How to Groom a Double-Coated Dog (https://www.akc.org/expert-advice/health/how-to-groom-a-double-coated-dog/)
- American Kennel Club — Dog Shedding: When Dogs Shed Most and How to Manage It (https://www.akc.org/expert-advice/health/managing-dog-shedding/)