A nail bed check takes 90 seconds per cat and catches most claw problems 2 to 4 weeks before the cat limps. The routine is 4 steps: extend 1 toe, look at the nail from the side, hold the tip against a light, and record a score per paw. Do it every 14 days, because a cat's nail grows roughly 1 to 2 mm a month and an indoor cat may never wear it down on its own.
Why every 2 weeks, not monthly
Indoor cats walk on soft surfaces, so the claw tip is not worn back and the quick (the pink blood supply inside) grows forward with it. In cats over 8 years, nail growth continues while grooming drops, and a curved nail can reach the pad in 6 to 10 weeks. At 14 days you still have 2 to 3 mm of safe material to work with; at 8 weeks the nail may already be touching skin, and trimming then means cutting close to the quick.
The 18-nail map
Count them: 5 on each front paw, 4 on each back paw, so 18 in total, plus 1 dewclaw on each front leg already included in that count. Cats also have a dewclaw on the inner front leg that many owners never see. Check the 2 front dewclaws first, since they curl soonest and are the ones most often missed.
| Paw | Nails to check | Quick distance from tip (mm) | Score 0-3 | Typical fault | Recheck |
|---|---|---|---|---|---|
| Front left | 5 | 1-3 | 0-3 | Dewclaw curl | Day 14 |
| Front right | 5 | 1-3 | 0-3 | Dewclaw curl | Day 14 |
| Back left | 4 | 2-4 | 0-3 | Thick, split tip | Day 14 |
| Back right | 4 | 2-4 | 0-3 | Thick, split tip | Day 14 |
| All 4 paws | 18 | 1-4 | 0-12 total | Any single 3 | Day 14 |
Score 0 for a short, clear nail with the tip 1 mm or more from the quick; 1 for a long nail that is still straight; 2 for a nail curving toward the pad; 3 for a nail touching skin, split, or bleeding. A total of 4 or more, or any single 3, means act this week rather than at the next scheduled check.
Where the 1 mm line comes from
The quick is visible as a pink core in a clear nail and stops 1 to 2 mm short of the solid tip in a young cat. Trim in 1 mm slices and look after every cut: the cut face turns from chalky to pink at the last safe millimeter. On a dark nail, hold the tip against a phone light and look for the shadow line where the core ends, then stop 2 mm before it. Never take more than 2 mm in 1 cut on a cat that has not been trimmed in 3 months.
Abnormality 1: color change
A black or brown streak under the nail, a purple nail bed, or a nail that stays dark after 2 checks is not dirt. Common causes are bruising from a catch on fabric, a nail bed infection, or a growth at the base. Photograph it beside a ruler, note the width in mm, and book a visit if it spreads over 2 mm or the toe swells.
Abnormality 2: swelling, heat, or pain
Compare the same toe on the other paw. More than 2 mm of difference in toe width, heat on the pad, or a flinch when you press the joint means infection or injury, not a trimming problem. Discharge, a bad smell, or a cat that licks 1 toe for more than 5 minutes at a time all point the same way. Soak nothing at home and do not cut the nail shorter to drain it.
Abnormality 3: thick, brittle, or ingrown
Older cats often grow nails that thicken to 3 mm across, split lengthwise, or curve into a full circle. A nail touching the pad makes a small hole that gets infected within 7 to 10 days. Trim 1 mm at a time weekly for 4 weeks to walk the quick back, rather than taking a large cut once. If the nail is already embedded in the pad, leave it and see a vet the same day.
The 2-week record
Use 1 row per check with 5 columns: date, paw, score, longest nail in mm, and what you did. After 3 checks, a pattern appears: the same paw scoring 2 each time, or a quick that never retreats despite trimming. Bring 6 checks, meaning 12 weeks of data, and a vet can tell whether the issue is growth, trauma, or an underlying problem such as an old fracture that changes how the cat stands.
Cutting safely: 4 habits
Use sharp scissor-type clippers, not human nail clippers, which crush the nail. Cut 1 nail, then give a treat, so a full session stays under 90 seconds. Have styptic powder within reach and press it on a bleed for 30 seconds. If a nail bleeds for more than 5 minutes or the cat refuses to bear weight for 24 hours, call the clinic.
What a nail issue costs
A trim at the clinic runs 10 to 25 USD. A nail bed infection with a 10-day course of antibiotics runs 40 to 120 USD. Removing an ingrown nail runs 150 to 400 USD with sedation. A 90-second check every 14 days is the cheapest line in that list by a wide margin.
Do this check tonight
- Count 18 nails out loud so you know 1 was not skipped.
- Look at each nail from the side, not from above.
- Score 4 paws 0 to 3 and write the date on the sheet.
- Trim 1 mm at a time, and stop at the first pink cut face.
Nails are also a hydration and weight clue: a cat that stops grooming its back legs often has stiff hips or extra weight, so pair this check with the hydration check and keep a running weight trend. If a nail was exposed to a cleaning product or a plant sap, check the toxin list before you trim again.
Terms mentioned in this article
Frequently asked
My cat's nails are black. How do I avoid the quick?
Work in 1 mm slices and check the cut face after every slice: chalky white is safe, pink means stop. Hold the tip against a phone light from the side and look for the shadow where the core ends, then leave 2 mm of margin. If you cannot see the line, take 1 mm off each nail weekly for 4 weeks rather than guessing once.
Is a nail trim painful for an older cat?
A correct trim cuts only dead shell and should not hurt, but older cats often have thickened nails attached to a sensitive bed, so a large cut does hurt. Trim 1 mm at a time, keep the session under 90 seconds, and stop if the cat flinches twice on the same toe. Pain on 1 toe that persists for 24 hours needs a vet visit.
How often should an indoor cat's nails be trimmed?
Check every 14 days and trim when a nail tip is within 1 mm of the quick or starts to curve. Most indoor cats need a trim every 3 to 6 weeks, and cats over 10 years often need it every 2 to 3 weeks because growth continues while natural wear stops. Front dewclaws usually need it most often.