Is it OK to feed squirrels oats?

Squirrels can eat oats, but they are not the best food for them. Oats are a good source of carbohydrates and fiber, but they are also high in fat. Squirrels can eat oats in moderation as a treat, but they should not make up the majority of their diet. Squirrels should eat a variety of foods, including nuts, seeds, fruits, and vegetables.