Discover whether the dog has appetite, how much food, whether it is picky or refusal to eat. A healthy dog ​​has a strong appetite and is very excited when it is not time to feed. It often circles around the owner, eats quickly, and is more stable in the appropriate amount. It is not picky or picks up. Sick dogs have poor appetite, like cold or clean water, pick food or refuse to eat.

Whether the dog vomits when eating, or whether vomit is found while cleaning the kennel. Pay attention to the color, shape and content of the vomit. Healthy dogs do not vomit. Only dogs with infectious diseases or gastrointestinal diseases will vomit.

The main focus is on observing whether there is constipation and diarrhea in the shape, color, properties and contents of the dog's stool, and whether there is a special smell in the feces. Healthy dogs have strips and are moist and their color depends on the food. It can be yellow, yellow-green or brown, etc. without special odor. If the dog feces are thin and soft, the feces are bloody, foul smell or dry and hard, and small amounts, they are all characterized by major diseases.

See whether the dog's eyes have spirits, whether there is tears, whether there is turbidity in the cornea, whether there is eye boredom or secretions at the corners of the eyes, etc. The healthy dog's eyes have spirits, and the surroundings are clean and without eye boredom and do not cry, and the conjunctiva is pink. If you see that the dog's eyes are not viscous and the conjunctiva redness may be related to eye diseases or indigestion. Changes in the

nose lens are an important criterion for determining whether a dog is sick or not. The end of the healthy dog's nose is cool and moist, with a little water droplets. It is pathological when the end of the dog's nose is dry or there are serous, mucosal or purulent secretions in the nasal cavity.

See whether there are any abnormalities in the dog's postures such as standing, lying, sitting, etc., and whether it is staggering in gait or limb paralysis during exercise. Healthy dogs can naturally, easily and obey commands when doing various movements. The sick dog does not execute passwords very much, and has unnatural postures, and it shows painful symptoms when forcing the commands to be executed.