It is easy to get some verbs confused.
- Invented - means a person or persons spent a lot of time thinking about a problem and making a solution. Example: The telephone is an invention.
- Discovered - People discover things already present in their environment or the world. Example: Christopher Columbus discovered the New World.
- Created - Creations can be two things: (a) Creation - Whether you believe in a God or not, our world and the things in it are part of Creation. Or, (b) things that people create or make, whether big or small. Example: The little girl created a birthday card for her mother. Picasso created wonderful paintings.
Animals are under the area of Creation. They were here on Earth, but people did not create or invent them. People discovered that cats were living on Earth. People, primarily Ancient Egyptians, domesticated small cats so they'd be friendly and comfortable around humans. But no one "invented" cats!