If you want to help your dog gain weight, there are several things you can do. Here are some tips:

1. Feed your dog a diet higher in fat and protein. Foods high in protein and fat will help your dog healthily put on weight, and you should notice a weight increase in just a couple of weeks.

2. Feed your dog small meals frequently. By spreading your dog’s daily doses of food over three or four meals, your dog will be receiving nutrients throughout the day and helping him put on weight.

3. Add extra calories to your dogs diet. You can do this by supplementing their food with appropriate human food. Examples of safe human food supplements include roasted chicken without the skin, boiled eggs, canned tuna, non-fat plain yoghurt, or plain canned pumpkin.

4. Offer your dog treats and snacks. Treats and snacks are a great way to add extra calories to your dog’s diet, but you shouldn’t use treats as the primary source of calories for your dog.

5. Check with your vet. Before making any changes to your dogs diet, its important to consult with your vet to rule out any underlying medical conditions that may be causing the weight loss.

Remember that its important to feed your dog a balanced diet formulated for their specific nutritional needs. Adding human foods to your dogs diet should be done in moderation and with caution to avoid creating a nutritional deficiency.