Defeating your pet dog for a long period of time may have a series of negative effects and observations. Here are some possible situations: 1. **Decreased appetite**: Your dog may become uninterested in food and even be reluctant to eat when food is offered again. 2. **Weight loss**: Defeating your dog for a long period of time can cause your dog to lose a significant amount of weight, which may affect its overall health. 3. **Decreased energy level**: Your dog may become tired, show lethargy, lack of energy, or be reluctant to move. 4. **Mood changes**: Your dog may show anxious, irritable, or depressed behavior due to hunger and discomfort. 5. **Digestive problems**: Hunger may cause problems with the digestive system, such as vomiting, diarrhea, or constipation. 6. **Decreased immunity**: Defeating your dog for a long period of time can affect your dog's immune system, making it more susceptible to diseases. 7. **Dehydration**: If there is a lack of water at the same time, it may lead to dehydration, which is manifested by dry mouth, poor skin elasticity, and reduced water intake. 8. **Nutritional deficiency**: Long-term lack of food can lead to malnutrition, which may be manifested by rough hair and skin problems. 9. **Organ damage**: Long-term hunger and malnutrition can cause irreversible damage to important organs (such as the liver and kidneys). If you find your pet dog showing the above symptoms or not eating for a long time, it is recommended to consult a veterinarian as soon as possible to ensure the health and safety of your dog.