This example demonstrates object-oriented JavaScript patterns for modeling zoo animals, showing how constructor functions and prototypes create shared behavior. The code defines an `Animal` constructor with `identify()` and `name()` methods on its prototype, while a `Zoo` object manages collections of animals. Although the zoo methods contain incomplete logic, the driver code tests animal identification, leg counts, and prototype method sharing across instances. The example uses plain JavaScript—no external libraries—relying on `console.log` for output and a custom `assert` function for validation. It illustrates inheritance and code reuse, though the zoo aggregation methods remain non-functional as written.