Habits

Giant pandas are loners. They dislike being around other pandas so much that they have a heightened sense of smell that lets them know when another panda is nearby so it can be avoided, according to the National Geographic. If another giant panda does get close, the two will end up swatting and growling at each other. Sometimes they will even bite each other. 
On average, a giant panda's territory is about 1.9 square miles (5 square kilometers). To mark their territory, giant pandas secrete a waxy scent marker that they rub on their territory. Other giant pandas can tell the sex, age, reproductive condition, social status and more from the scent marker, according to the San Diego Zoo.


The only time that these pandas seek each other out is during mating season. Males will use their smelling ability to find a female when they are ready to mate.

Resource: https://www.livescience.com/27335-giant-pandas.html