Overfeeding can have detrimental effects on your dog's health, leading to obesity and various associated health problems. It's important to be aware of the signs of overfeeding and take steps to prevent it. Here are some key signs to watch out for:

1. Weight gain: If your dog is consistently gaining weight, it could be a sign of overfeeding. Regularly monitoring your dog's weight and body condition can help you identify any excessive weight gain.
2. Decreased activity: Overfed dogs may become lethargic and less interested in physical activities. If your dog shows a sudden lack of energy or reluctance to exercise, it may be a result of overfeeding.
3. Excessive begging: Dogs that are overfed may exhibit excessive begging behavior, constantly looking for food even when they have already been fed. This can be a sign that their nutritional needs are not being met.
4. Digestive issues: Overfeeding can lead to digestive problems such as diarrhea, vomiting, or constipation. If your dog frequently experiences these issues, it may be a result of consuming too much food.
5. Increased water intake: Overfed dogs may drink more water than usual. This can be a sign of an imbalance in their diet or an attempt to compensate for excessive calorie intake.

Overfeeding your dog can have several risks and negative impacts on their health:

• Obesity: Overfeeding is one of the leading causes of obesity in dogs. Obesity can lead to a range of health problems, including diabetes, joint issues, heart disease, and a shortened lifespan.
• Joint and mobility problems: Excess weight puts strain on a dog's joints, leading to conditions such as arthritis and decreased mobility.
• Digestive disorders: Overeating can disrupt your dog's digestive system, causing issues like gastrointestinal upset, pancreatitis, and bloating.
• Reduced lifespan: Dogs that are consistently overfed have a higher risk of developing serious health conditions, which can ultimately shorten their lifespan.

It's important to feed your dog a balanced diet and follow portion control guidelines provided by your veterinarian. Regular exercise and mental stimulation are also crucial for maintaining a healthy weight and overall well-being. If you're unsure about your dog's nutritional needs or suspect overfeeding, consult with your veterinarian for personalized advice.

References:

1. Smith, R. N. (2018). Obesity in dogs and cats: A metabolic and endocrine disorder. In Veterinary clinics of North America: Small animal practice (Vol. 48, No. 5, pp. 937-951). WB Saunders.
2. German, A. J. (2006). The growing problem of obesity in dogs and cats. The Journal of nutrition, 136(7), 1940S-1946S.
3. Laflamme, D. P. (1997). Understanding and managing obesity in dogs and cats. The Veterinary clinics of North America. Small animal practice, 27(2), 295-309.