The term ANIMAL THAT MAY BE 'XING' can be solved by the four-letter word DEER. DEER are a type of mammal that are found in many parts of the world, including North America, Europe, Asia, and parts of Africa. They are known for their long legs and antlers, which are unique to male DEER. The term 'xing' is often used to describe DEER crossing roads, as they are known to wander across highways and other roads.