Below you can find the They sleep about 18 hours a day partly due to the lack of protein in their eucalyptus diet Jeopardy Words Answer. The answer to They sleep about 18 hours a day partly due to the lack of protein in their eucalyptus diet has 6 letters. This clue belongs to the Mammals category and is part of Jeopardy Word Level 454. If you scroll near the bottom you will find other clues and answers part of level 454