Not sure but you should give them satin balls look it up it will make your dog gain weight fast!
I need to gain weight, how can I do it fast and healthy?
You can drink protien shakes that are very helpful to gain weight.
You should feed an underweight puppy a high-quality puppy food that is rich in protein and fats to help build muscle and gain weight. It's important to consult with a veterinarian to determine the best feeding plan and any necessary supplements for your underweight puppy. Feed small, frequent meals throughout the day to help with digestion and weight gain.
Usually if you give them puppy food they will gain weight if not look for some dog food with meat being one of the first words listed
gain weight
Make you gain weight , fast
You probably have a very high metabolism which makes it hard to gain weight. I would slowly start to rasie your calories are start a weight training program. Make sure you are eating quality foods, and not just going out to fast food everyday to gain.
Because fast foods are high on calories and fat.
How fast you eat has negligible effect on weight gain or loss.The important factor is what you eat and how much.
Exorcise and lose weight. Your metabolism will get faster as you exorcise more.
Fast food, junk food, and other fatty foods.