Many people like animals, but taking care of them is hard work. Zookeepers take care of wild animals in zoos and animal parks. They feed the animals, clean their living spaces, and work to keep them healthy. Zookeepers watch the animals to see if they are sick or hurt. Keepers need to watch and listen carefully to notice any changes in behavior. Keepers write detailed notes about each animal and tell a veterinarian if there is a problem. Many keepers go to college for 2 or 4 years. They often study biology, animal science, or some other science. Keepers also need to understand math so that they can measure food properly. Keepers need good writing and speaking skills so that they can take notes and talk to the public.