Cats and dogs are similar animals with similar food needs. They are both carnivorous animals and their diet contains the same basic ingredients. However, dogs can benefit from larger intakes of carbohydrates for more energy since they are mainly more active and their bodies can also process these more efficiently.On the other hand, cats require lower levels of energy as they are known to spend a great part of the day sleeping. Thus, their diet should be mainly based on animal proteins and less on fats and carbs.So, to answer shortly, dry cat food won’t harm dogs but it may not be as delicious for both animals either.