When fitting your dog with a dog backpack what should the ratio of backpack weight to your dogs weight be?

When fitting your dog with a backpack, the general guideline is that the weight of the backpack should not exceed 10-15% of your dog's body weight. For example, if your dog weighs 40 pounds, the backpack should ideally weigh no more than 4 to 6 pounds. It's important to ensure that the load is balanced and that your dog is comfortable and able to move freely. Always monitor your dog for signs of fatigue or discomfort when using a backpack.