Why do dogs eat grass

There are several fascinating theories as to why dogs eat grass, from liking the taste to improving their health. It could also go back to their wild ancestors, wolves. Here we explore what your pet pooch might be thinking when he tucks into some unlikely food like grass. For the main part, it's harmless, but some grasses may be covered in pesticides, or herbicides, and could be dangerous if your dog ingests them. You should take your dog to the vet, if he is turning down his normal food, but eating grass.