Elderly pet suffer from arthritis and other aches and pains just as people do. An orthopedic dog bed made from memory foam and gel will offer support as well as extra comfort. Also, older dogs tend to develop painful elbow calluses that are more comfortable on soft bedding.
If your cat loves to drink water from a running tap, consider getting a drinking fountain for her. Cats in the wild drink running water and a pet drinking fountain recreates this in the home.