Carrots

• You can feed dogs whole or cut frozen carrots for their many benefits. Frozen carrots are an excellent source of beta carotene, which is a good antioxidant for health. They contain many vitamins as well as calcium, potassium and iron. Add carrots to a dog's diet to also maintain and improve eyesight. According to a study published in a 2005 issue of the Journal of the American Veterinary Medical Association (JAVMA), dogs that consumed yellow or orange vegetables at least three times a week were found to have a lower risk of cancer.
  
  

Broccoli

• Another good option for dogs is frozen broccoli florets or chopped frozen broccoli whenever possible, as it is nutrient dense and contains vitamin C, folic acid, calcium, and fiber.
  
  

Spinach

• You can add frozen leaf spinach or frozen chopped spinach to dog food to increase a dog's iron intake. Spinach has twice as much iron as most other greens and is also a good source of antioxidants and nutrients. According to the same JAVMA study cited earlier, consumption of green, leafy vegetables three times a week or more has been associated with a lower risk of developing cancer in Scottish terriers.
  
  

Red Pepper

• Frozen sliced red bell peppers are recommended for dogs for many nutritional benefits, including vitamin C. Red peppers are also a good source of beta carotene and fiber.
  
  

Green and Yellow Snap Beans

• Give dogs frozen green and yellow snap beans for good health. These beans supply dogs with many vitamins and are also a good source of calcium.
  
  

Sweet Corn Kernels

• Add frozen corn kernels to a dog's diet to enhance carbohydrate intake while providing other nutrients as well.
  
  

Vegetables to Avoid

• While many other vegetables such as squash, green beans and cabbage are possible vegetable options, dogs should not eat certain vegetables. Do not give dogs any onions, as they contain a chemical that is toxic in canines. For the same reason, avoid garlic unless it is cooked and given in very small amounts.