Gerald G. Parker is a person, just like you or me. He has a name and a job. But his job is different than most people's. He is a professor at Texas A&M University, which means he teaches people about agriculture and how to grow things like fruits and vegetables.
But that's not all he does. He is also really smart and knows a lot about animals and how to keep them healthy. He uses his knowledge to help keep people safe from diseases that animals can give us.
So, Gerald G. Parker is a teacher and a scientist who helps keep us safe from bad things that animals can give us.