Service animal-an animal that has been specially trained to help someone, for example a guide dog (= a dog trained to help a blind person move around safely)
noun-Can I bring my service animal with me to my appointment?
sheepdog-a dog trained to help people control sheep and move them in the direction wanted
noun-Our sheepdog is very protective of newborn foals.
Therapy animal-an animal trained to play a role in a physical or emotional therapeutic treatment plan, as a horse helping a rider develop muscle tone or a dog providing cognitive engagement for nursing home residents.
noun-ou can rest assured that each animal, no matter the breed or species must pass a rigorous screening and training process prior to making its debut as a pet