Population Ecology
Once upon a time, in some pretty big cities and places that used to be wilderness, a lot of animals had to change things up to live alongside us humans. Many of these animals had to adapt to urban environments, and while some thrived and saw population explosions (like the adorable trash panda, aka raccoon), others suffered due to human encroachment. This fascinating field of study is called population ecology, and it helps us understand how specific organisms respond to suddenly sharing their space with us messy, creative humans.