Some of our favorite furry friends are seniors.. ..Here's how you care for them.         Dr. April Miles gives a brief introduction on caring for seniors: Take away points: -Generally, a doggo is considered a senior at about seven years.  -A vet test can test for far more than what the owner may be aware of.  -Many disease go unnoticed by owners. Visit the vet about twice a year once your doggo becomes a senior. -Some seniors (and certain breeds) may need specialized diets. -Exercise regimens should change as your doggo ages.