Most brushes are sold as if every animal had the same coat. They do not, and it is the single most common reason a grooming tool ends up in a drawer.
There are six coat types worth distinguishing. Work out which one you have and the choice of tool stops being a guess.
Short, flat coats
Beagles, boxers, most domestic shorthair cats. One layer, lying close to the body, shedding steadily rather than in clumps.
These need the least equipment. A rubber curry brush or a soft pin comb lifts loose hair and that is most of the job.
What not to use: an undercoat rake. There is no undercoat to reach, so the teeth drag on skin and the animal learns to dislike being groomed. This is worth saying plainly because rakes are frequently sold as general-purpose tools.
See grooming.
Double coats
Huskies, german shepherds, most northern breeds, and a good number of mixed-breed dogs. A dense woolly undercoat beneath a coarser topcoat.
This is the coat that sheds in clumps, and the one where tool choice matters most. A brush that only reaches the topcoat leaves the dead undercoat sitting underneath, which is why brushing can feel like it achieves nothing.
What works is an undercoat rake — teeth spaced and long enough to pass through the topcoat and pull the dead fluff out from below.
On shaving: the general guidance from groomers is not to shave a double-coated dog. The undercoat insulates against heat as well as cold, and the topcoat does not always grow back the same. If your dog is struggling in summer, the usual answer is to remove more undercoat, not to remove the coat.
See double and long coats and shedding season.
Long single coats
Afghans, maine coons, long-haired domestic cats. One long layer, no dense undercoat, prone to matting near the skin rather than shedding in clumps.
The risk here is different. Mats form close to the body — behind the ears, in the armpits, under the collar — and they tighten. A wide-tooth comb worked through in sections finds them before they set.
What not to use: anything forced through an existing tight mat. A mat against skin needs to be worked apart with fingers, cut free, or taken to a groomer. Pulling a brush through it hurts.
Curly and wool coats
Poodles, bichons, doodle crosses. The coat holds shed hair instead of dropping it, which is why these dogs seem not to shed and then mat badly.
These need frequent brushing rather than occasional heavy sessions — a slicker brush, worked in sections, several times a week. A self-cleaning slicker is worth the difference here, because picking matted fur out of a slicker by hand is the reason most people stop doing it.
See grooming.
Wire coats
Terriers, schnauzers. A harsh outer coat over a softer layer. Traditionally hand-stripped rather than clipped, which is a skill and usually a groomer's job.
Between appointments a slicker and a comb keep it tidy. We do not currently stock a stripping knife, and we would rather say so than point you at something that is not the right tool.
Hairless
Sphynx, chinese crested. No brushing required at all. Skin care rather than coat care, and largely outside what we sell.
If you are not sure which you have
Part the coat with your fingers and look at the base. A dense, softer, lighter-coloured layer underneath the outer hair means a double coat. One uniform layer all the way down means a single coat, long or short depending on length.
That one check decides most of the rest.
How we sort this
Every product page on this site names the coat type it suits and the ones it does not, and the grid is colour-coded by job so you can see at a glance what a tool is for. Ruling you out costs us nothing. Selling you the wrong brush costs us both.