I agree w/ the others i would take her to the vet just to check because of her age i have 2 dogs that like to eat there poop i went to the vet and she told me that it's normal for dogs to do that at times it taste yummy to them YUK i got FOR-BID and that seems to help alittle anyway all i really can do is just pick it up before they get to it

GOOD LUCK