Last week Sony unveiled a brand new trailer for NaughtyDog's The Last of Us: Part II at Paris Game Week, with the promo coming in for some criticism due to its brutal violence, particularly against women andchildren [watch the trailer here].
As with younger children, attention is attention and it is possible that a dog that eats grass is trying to tell its owner that it needs more attention from them much as the naughty toddler who draws on the walls would do.