1. Changes in Appetite – A Key Early Sign Your Dog Might Be in Pain

A sudden change in your dog’s eating habits is one of the clearest early signs that something may be wrong. Most dogs follow a regular routine when it comes to meals.
They get excited when food is served and usually finish it without hesitation.
So, if your dog suddenly refuses food, eats much less than usual, or seems unsure about approaching the bowl, it’s time to pay attention. These shifts often mean your dog is experiencing pain or discomfort.
Oral Pain: A Hidden Reason for Eating Less
One of the most common causes of appetite loss is pain in the mouth.
Dental problems such as broken teeth, gum disease, or mouth sores can make chewing painful.
Even if your dog is hungry, they may avoid eating because it hurts.
Internal Pain Can Also Affect Appetite
Not all pain is visible.
Stomach irritation, digestive issues, or organ problems can make your dog feel unwell and reduce their desire to eat.
Even conditions like arthritis or infections, which don’t directly involve digestion, can trigger changes in appetite through stress and discomfort.
When to Call the Vet
It’s normal for dogs to skip a meal occasionally, but if reduced appetite lasts longer than 24 to 48 hours, it’s time to see a veterinarian.
If the change comes with vomiting, weight loss, or low energy, seek help immediately.
Watching how and how much your dog eats gives you valuable clues about their health — and noticing this early can make all the difference.