Okay kiddo, so a long time ago, people have been interested in animals and how they work. They wanted to know about their bodies and how they survive in their environments. This was called zoology.
Then, a man named Charles Darwin came along and he did some really important work. He figured out that animals change over time through something called evolution. This means that animals that are better adapted to their environment are more likely to survive and have babies, passing on their good traits.
After Darwin, zoologists started studying animals even more carefully. They wanted to learn about their habits, how they grow and develop, and how they relate to the other animals around them. They also wanted to know how animals are connected to each other and to their environment. This is called ecology.
Nowadays, zoologists use really cool tools to study animals, like microscopes and computer models. They also study different kinds of animals, like fish, birds, and insects. They study animals both in the wild and in captivity, because they want to learn as much as they can about these amazing creatures.
So that's the history of zoology post-Darwin in a nutshell, kiddo!