How often should I trim my dog's nails?

Why length is not cosmetic

A nail long enough to reach the floor pushes the toe backwards with every step. The dog compensates by changing how it loads the leg, and over months that altered posture travels up into the wrist, elbow and shoulder. In a senior or arthritic dog it compounds joints that are already sore.

Long nails also cost traction on smooth flooring, because the dog is standing on nail tips rather than paw pads. That is the opposite of what an unsteady older dog needs. Severely overgrown nails can curl into the pad, which is painful and becomes an infection.

The quick, and why overgrown nails take time to fix

Inside each nail is the quick, carrying blood supply and nerve. As a nail grows long the quick grows out with it, so a badly overgrown nail cannot simply be cut back to the right length without cutting into living tissue.

• Trim small amounts weekly. The quick recedes in response, letting you shorten the nail over several weeks.
• On light nails the quick is the pink core, visible through the nail. On dark nails it is not visible, which is where a grinder helps.
• Stop when a small dark dot appears in the centre of the cut surface. That is the leading edge of the quick.
• Keep styptic powder to hand. Catching a quick bleeds dramatically and stops quickly.
• Do not forget dewclaws. They touch nothing, so they wear down on nothing, and they are the ones that curl into the leg.

If your dog already hates it

One bad experience is usually the cause, and forcing the issue reinforces it. Rebuild the association rather than restraining harder: handle paws outside of trimming sessions and pay for it, introduce the tool without using it, and trim one nail before stopping. Finishing calm with one nail done is progress, and doing all four feet while the dog struggles is not.

A grinder is worth trying for a dog frightened of clippers, as it removes a fraction at a time and makes hitting the quick far less likely. It brings its own noise and vibration, so introduce it in stages. Where a dog is genuinely panicked, a vet or groomer doing it properly beats a monthly fight at home.