A big part of a smooth grooming session is understanding what kind of coat you're actually working with. Here's a quick guide to the four broad categories.
Double coats (Huskies, Golden Retrievers, Corgis)
These have a soft, dense undercoat beneath a coarser topcoat. Never shave a double coat down to the skin — it can disrupt regrowth and remove natural insulation. Focus on de-shedding the undercoat with a slicker brush before using the clipper to tidy stray guide hairs.
Curly coats (Poodles, Doodles)
Curly fur mats easily, especially behind the ears and under the legs. Brush in sections rather than all at once, and use a wider guide comb to avoid an overly short, patchy result. These coats usually benefit from more frequent, lighter trims rather than infrequent heavy ones.
Wiry coats (Terriers, Schnauzers)
Wire coats are coarse and grow in a distinctive texture that some owners prefer to hand-strip rather than clip, though clipping is faster and perfectly fine for pets not shown competitively. Go slowly around the beard and eyebrows, where wiry hair tends to be thickest.
Short, smooth coats (Beagles, Boxers, most cats)
These need the least maintenance but still benefit from a light trim and de-shedding pass every few weeks, especially during seasonal shedding. A gentle, low-vibration clipper matters most here since the coat is thin enough that pets feel every bit of buzz.
When in doubt, go longer
Across every coat type, it's easier to trim more off in a follow-up session than to fix a cut that went too short. Start with a longer guide comb setting than you think you need.