A dog that is not interested in food or is losing weight rapidly may be displaying signs of an underlying health issue.
A dog that is drinking more water than usual and needing to go outside to urinate more frequently could be experiencing a urinary tract infection, kidney disease, or diabetes.
A dog that is sleeping more than usual or no longer interested in activities they once enjoyed may be feeling unwell or in pain.
A dog with chronic bad breath or signs of tooth decay may be suffering from dental disease or other health issues.
If a dog is experiencing vomiting or diarrhea that persists for more than a day, it could be indicative of a gastrointestinal problem, food poisoning, or ingestion of a toxic substance.
A persistent cough or wheezing in a dog may be a sign of respiratory illness or heart disease.
A dog with a persistent rash, scabs, or sores may be experiencing allergies, skin infection, or parasites.
A dog that suddenly becomes aggressive, anxious, or depressed may be experiencing pain or illness.
A dog that is struggling to get up or walk, or limping, may be experiencing joint pain or injury.
If a dog's urine or feces appear different in color or consistency, it could be indicative of an underlying health problem.