Avoid Letting Your Dog Eat Celery Leaves
Celery leaves aren’t considered toxic to dogs but they may be detrimental to your dog’s health in other ways. Celery often makes it way into the dirty dozen list and most of the pesticide residue is reportedly found on the leaves. If you are worried about the effects the pesticide residue may have then consider other green vegetable alternatives that may be safer for your pet.
In any case, most dogs may not even like the intense flavor of celery leaves so they may actively avoid any food that contains them. Celery leaves do contain important nutrients like vitamin E but there are many other “safe” vegetables that offer the same nutritional value.