Why Are Large Celery Stalks Harmful for Pets?

Large celery stalks pose choking hazards with stringy fibers, plus diuretic effects from high water and potassium that overload kidneys and cause electrolyte imbalance, diarrhea, or urinary frequency. Pesticide residues add risks. Dogs crunch small pieces fine, but whole stalks endanger. Chop finely, wash thoroughly, limit to 10% treats, and monitor urine output.