Has your baby by any chance been to the vet's recently, maybe to draw blood
from jugular? That can cause bruising.
If not, then is it possible she got into rat poison? Are there any other bruises
(check gums and ears too). Does she pull on leash? Has she been around other
dogs recently? How is her behavior & appetite overall?
"He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours,
faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion." ~ Unknown