Question: are collard greens bad for dogs?
Answer: Dogs that are prone to kidney or bladder stones should avoid other foods with high calcium oxalate contents. These include spinach, beet greens, roots of beets, Swiss chard, collards, parsley, collards, leeks, quinoa, okra, and, of course, kale. Isothiocyanates, which are also found in broccoli, pose another problem.