Are Therapy Dogs Service Dogs (SDs) or Emotional Support Animals (ESAs)?

No, Therapy Dogs (or therapy animals) are not Psychiatric Service Dogs nor are they Emotional Support Animals. TDs are anyone's pets that have been trained to behave properly in a wide variety of environments and who are exceptionally gentle and well-mannered with a wide variety of human beings. Their "job" is to bring a higher level of social functioning to people in nursing homes, schools, hospitals, hospices, etc. They cannot go into no-pets-allowed places unless they are invited. TDs are a great asset to the community, though! TDs were used after 9-11.

the link again is http://en.wikipedia.org/wiki/Therapy_dog