Pet Care Needed - Full-time / Part-time

Female pitbull mix about 14 years old sometimes has joint pain. No aggression has never been around Children. Cant be around children. Shes old and sore. Cant predict how she would react. I give her two aspirins wrapped in sandwich meat if she is limping or sore besides that no medication. One cat about 2 1/2 years old it will have a self feeding self watering and self cleaning litter box just needs to be checked to make sure everything is working properly.