Why we need animal models

mod·el
ˈmädl

noun
1. a three-dimensional representation of a person or thing or of a proposed structure, typically on a smaller scale than the original.
2. a system or thing used as an example to follow or imitate.
3. a person, typically a woman, employed to display clothes by wearing them.
4. a particular design or version of a product.

These are all the same:

For the record, I study this courtship. Although I want to say, “We study human dancing as a model system for understanding Drosophila behavior.”