1.
reindeer; caribou
The arctic deer known in English as reindeer or caribou. Like many animal names, it is conventionally written in katakana.
The reindeer (also called caribou), a deer native to arctic and subarctic regions. Like most animal names, it is conventionally written in katakana.
Cultural note
In Japan トナカイ is strongly associated with Christmas and サンタクロース (Santa Claus), from the Western image of reindeer pulling his sleigh.