What does a dog show before death?

If a dog dies of old age, before death it usually becomes drowsy, eats little or nothing, breathes hard, and moves slowly; some go out alone to a quiet corner or dig a spot in the wild to wait silently.

If it dies of disease, before death there are usually vomiting, diarrhea, fever, poor appetite, weight loss, dehydration, anemia, weakness, and empty eyes, though symptoms differ by disease.