Given the task definition and input, reply with output. Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

Fact: An example of an instinct is the kangaroo 's ability to crawl into its mother 's pouch to drink milk

how does an animal know to perform certain crucial life actions before exposure to it?