The sight of a dog munching on grass is common, but this behavior puzzles many pet owners. Is it an attempt to soothe an upset stomach? A sign of nutritional deficiency? Or just a quirky habit? Science and canine ethology offer several theories, and understanding them can help you determine whether you should be concerned or simply let your dog enjoy their occasional “salad.”{:}{:es}Los perros descienden de los lobos, y estudios de lobos salvajes muestran que consumen plantas y hierbas como parte de su dieta. Este comportamiento podría haber persistido por varias razones: