Labradors were bread to be hunting and fishing dogs in what is now Newfoundland, Canada. They are capable hunting and fishing dogs (hence the name retriever) and often assist humans on hunting trips in multiple parts of the world.
As domesticated animals, the Labradors habitat habitat is usually a humans home where they gorge on whatever falls on the floor and perform tricks in exchange for puppy treats. They are very loving dogs and do best with human companionship. With care, they are able to live in all the same environments humans do.