Why Is Swiss Chard Harmful for Pets?

Swiss chard is oxalate-rich, promoting calcium oxalate stones in kidneys and bladder while causing vomiting or diarrhea in sensitive pets. Goitrogens add thyroid concerns in excess. Small cooked leaves occasionally suit most dogs, but cats struggle more. Watch for urinary signs, hydrate heavily, and choose safer alternatives like green beans. Vet urology checks for repeat offenders.