There is no one size fits all answer to this question, as the ideal weight for a dog can depend on a number of factors, including its breed, age, size, and activity level. In general, it is important for dogs to maintain a healthy weight to help ensure their overall well-being and reduce the risk of obesity-related health problems. Different breeds of dogs can have different ideal weight ranges. For example, a small breed like a Chihuahua may have a healthy weight range of 4 to 6 pounds, while a large breed like a Great Dane may have a healthy weight range of 100 to 120 pounds. If you are unsure about your dog's ideal weight, your veterinarian can help you determine what is appropriate for your dog based on its breed, size, and other factors. To determine if a dog is at a healthy weight, you can consult your veterinarian or use a body condition score (BCS) chart. A BCS chart uses a scale of 1 to 9 to rate a dog's body condition, with 1 being underweight and 9 being overweight. A dog that scores a 5 on the BCS chart is considered to be at a healthy weight.