If you're looking to give your dog a healthy, low-calorie snack, cucumbers are an excellent option that you can find at any store. Although technically a fruit and not a vegetable, cucumbers are among the safest and most beneficial natural foods you can give to your dog. They are low in calories, high in water content, and contain essential nutrients that can help keep your pet hydrated and healthy. Including cucumbers in your dog's diet can be a great way to provide a refreshing treat, especially during hot days. Just be sure to cut them into appropriate sizes to prevent choking and introduce them gradually to your pet's diet.