Career Education & Opportunities for Young People. This program looks at the following careers Service Dog, Dolphin & Horse Trainer, Herpetologist, Zookeeper. SERVICE DOG TRAINER: What is a service dog? How does one become a service dog trainer? DOLPHIN TRAINER: How do dolphins get trained? What subjects should you take in school to be a dolphin trainer? HORSE TRAINER: Are there different types of horse trainers? What is the difference between a quarter horse and a thoroughbred? HERPETOLOGIST: What is a herpetologist? Are all snakes poisonous? ANIMAL TRAINER: What is the most important thing to do to train wild animals? ZOOKEEPER: What courses are important to be a zookeeper? What are endangered animals?