Question: how to get a malnourished dog to gain weight?
Answer: Talk to Your Veterinarian. Your dog's veterinarian is your partner in your dog's health care so talk to your vet before you make any changes regarding your dog's weight. ... 
Create a Journal. ... 
Weigh Your Dog. ... 
Choose a Quality Dog Food. ... 
Feed Small Meals Often. ... 
Exercise is Beneficial. ... 
Weight Gain Snacks.