Methods to prevent colds in dogs:

1. Keep warm. When the climate changes, you should pay attention to keeping your dog warm, dry it immediately after bathing, and do not let your dog catch cold, which is a very important factor in causing colds.

2. Increase exercise. Strengthen the dog's exercise regularly, improve the dog's physical fitness, and increase non-specific immunity.

3. Avoid sources of infection. When influenza is prevalent, try not to take your dog out to avoid contact with sick dogs.

4. Eat healthy. The dog's diet should be light, and do not feed it oily or watery food. Feeding should be regular and quantitative, with small meals and frequent meals.

5. Sterilize the kennel. The kennel must be placed in a warmer place at home to avoid drafts. Pay attention to disinfecting and sterilizing the kennel frequently and exposing it to sunlight.

Symptoms of colds in dogs:

1. Not in good spirits. When it catches a cold, it will be depressed and in poor spirits. It will always lie motionless on the ground and become sleepy easily.

2. Runny nose. Dogs will also have a runny nose when they are sick. When they have a cold, the nose will always be watery and transparent.

3. Coughing and sneezing. Dogs will have symptoms of sneezing and coughing after catching a cold, have difficulty swallowing food, feel throat discomfort, and may also vomit.

4. Decreased appetite. Once you catch a cold, your appetite decreases, and you no longer have any interest in even your favorite snacks.

5. The eyes are red and bloodshot. If the eyes are severely congested, the eyes will be filled with red bloodshot eyes, and the eyes will be unwilling to open all day long. Tears will often shed, causing the tear stains to suddenly become serious.