Biotherapy

Biotherapy is the use of living animals for medical treatment or as an adjunct to medical diagnosis.

Overview
Biotherapy encompasses among other things maggot therapy (maggot debridement therapy [MDT], larva therapy), leech therapy (hirudotherapy), honey bee therapy (apitherapy), ichthiotherapy (fish therapy), pet therapy, detection dogs, medical response dogs, phage therapy, microbialtherapy, and helmitherapy (worm therapy)

Maggots, leeches & fish have been used to save limbs & lives. Dogs can detect cancer, alert to medical problems, and raise the spirits. Bee venom has been reported to help in neurological and musculoskeletal diseases.