Dogs can eat radishes as an occasional treat, but they may not like the spicy taste. Other cruciferous vegetables that dogs can eat include Brussels sprouts, broccoli and cauliflower.
Cruciferous vegetables are excellent sources of many vitamins and trace minerals. Like all vegetables, they should be introduced gradually into a dog's diet and should be discontinued if the dog has an adverse reaction. Other vegetables safe for canine consumption in small quantities include asparagus, carrots, cucumbers, green beans, sweet potatoes and white potatoes. Most vegetables can be given raw or cooked. Dogs should not be given onions or garlic as these can cause anemia.