Based on religious or moral values, there are some dog owners who would insist that their dogs feed on vegetarian food only. 
While some claims have been made for dogs being able to thrive on diets that consist primarily of tofu that provide plenty of vegetable matter protein. That protein is not high quality enough to be metabolised by your dog. In fact, fresh fruits and vegetable snacks are often recommended for dogs that must lose weight only because these vegetable base snacks add very few calories to your dog’s system.
It is important to remember that even if you feel that eating meat is “immoral,” your dog has no morality; he/she is an amoral creature who lives their life based on their desires, not on right or wrong.
It is also strongly recommended that a veterinarian is consulted before changing to a vegetarian diet. Regular visits to the vet is necessary until they are certain your dog has adjusted to the diet.
