Kale

It is said that kale is the healthiest green of them all. This veggie is among the most nutrient dense foods and contains vitamin A, vitamin K, vitamin C, Vitamin B6, manganese, calcium, magnesium, potassium and so on. It also contains powerful antioxidants like quercetin and kaempferol that are good for your pet’s health as well. 

Even though kale has similar benefits to spinach, when it comes to your dog’s diet, you shouldn’t feed your pet spinach because it isn’t safe. “Spinach is higher in oxalates, which can be problematic for pets that may be prone to stones in the kidney and bladder,” cautions Dr. Judy Morgan, an author and veterinarian certified in food therapy. “This is a bigger problem in small breeds, particularly terriers and Schnauzers.”