Hypothetical Scenario

You will become a random animal and exist in its natural habitat. You can not go anywhere that animal wouldn't go normally. You will have knowledge on how to do anything that animal normally does and nothing will eat you if you're a prey animal.

You don't have to eat. Other animals might fight you, but can't kill you. They will leave you alone before they kill you if they beat you down.

You will heal back from any injuries within 24 hours but still feel the pain until healing.

You just have to live as that creature for 6 months, then you turn back and get 50 million of a mystery currency that exists currently on earth. All currencies that can be found in google conversion boxes will be put in a hat then one pulled out at random.

Bonus Round: You get to pick the animal but everything else stays the same