A local doctor
A doctor who treats animals is called a Veterinarian or a Veterinary Doctor
A Doctor who treats animal diseases and injuries is a veterinary surgeon (British English) - or Vet for short.
Foot doctor
Such a person, who just treats feet, is a Chiropodist.
Traumatic injuries of the external ear are treated initially by an emergency physician, trauma surgeon, or plastic surgeon.
The person who treats foot complaints is a Podiatrist
A doctor who treats the elderly (technically defined as any person over the age of 65) is a Geriatrician, or Gerontologist.
A person who treats his or her guests well is referred to as a "good host", or a "gracious host".
Physiotherapists, chiropractors, massage therapists are probably the most common ones.
Of course, if the person giving the treats is inconsistent or intentionally confusing in the way the treats are given.
It stays in the blood and the person who contacts it can not give blood.