Simplify the following text for a Grade 6 native English-speaking person.
Original: The largest deer occur in the temperate regions of Canada and United States . The Northern white-tailed deer ( borealis ) , Dakota white-tailed deer ( dacotensis ) , and Northwest white-tailed deer ( ochrourus ) are some of the largest animals , with large antlers .
Simplified: The white-tailed deer is a type of deer that is found throughout most of North America , except some parts of the United States .