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What do unhealthy dog nails look like?

You might not think twice about your dog’s nails until you hear them clicking loudly on hardwood floors or notice them limping after a walk.

You might not think twice about your dog’s nails until you hear them clicking loudly on hardwood floors or notice them limping after a walk. But those small, often-overlooked parts of their body can tell you a lot about their health—unhealthy nails show clear signs that shouldn’t be ignored. For example, nails that are discolored, turning yellow, brown, or even black (when they’re not naturally that shade) can signal infections or even underlying issues like fungal growth.

Length is another big clue. If your dog’s nails curl under and start digging into their paw pads, that’s a red flag. Overgrown nails don’t just hurt—they can change how your dog stands and walks, leading to joint pain or even long-term damage to their legs. In some areas with strict pet welfare laws, allowing nails to get this long could be seen as neglect, since it harms your dog’s quality of life. Most vets or groomers recommend trimming nails every 2-4 weeks, but it’s easy to put off until you see obvious problems.

Cracks, splits, or peeling in the nail are also signs of trouble. You might spot this when brushing your dog or after they’ve been playing outside—dry, brittle nails often break easily, leaving painful exposed quicks. Puppies with soft nails or senior dogs with weaker nail beds are more prone to this, but even adult dogs can develop it if they don’t get enough moisture or the right nutrients. Some owners use pet-safe nail conditioners, but regular trims and avoiding rough surfaces (like concrete) can help prevent these issues.

Swelling or redness around the nail bed is hard to miss and usually means discomfort. Your dog might lick their paw constantly, pull away when you touch their feet, or even refuse to walk. This could be from an ingrown nail, a bacterial infection, or a foreign object stuck under the nail—all things that need vet attention fast. In places where public spaces require dogs to be well-groomed, a painful, infected nail could also mean you can’t take your dog to parks or trails until it’s treated.

Keeping an eye on your dog’s nails isn’t just about grooming—it’s about keeping them healthy and compliant with local rules. By checking their paws weekly, learning to trim nails safely (or visiting a pro if you’re nervous), and watching for early signs of trouble, you can keep your dog’s feet happy. After all, a dog with healthy nails is a dog that can run, play, and explore without pain—something every pet owner wants for their furry companion.

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