Why Dogs Eat Grass

Does your dog like to nibble on the grass? According to this article from Pet Place, offers up several theories, though the definite answer isn't really clear.

Do dogs eat the grass to make themselves vomit when they're ill? Or does eating the grass simply something they like and then leads to vomiting. Many vets feel it's the latter, that dogs are simply following their ancestors who lived in the wild, and enjoy nibbling on some grass.

Though the act itself if relatively harmless, eating grass that has been treated with pesticides or other chemicals is dangerous to your pet.