Males of most species have some odd habits when it comes to where and how they urinate and pandas are no exception. Pandas aren't really thought of as athletic since their diet restricts the amount of energy they have but when mating season comes around all bets are off. The males do handstands to allow them to urinate on trees which spreads their scent further in hope of a female who is suitable mate will seek out the male. The urine also contains gland secretions indicating the age and sex of the panda. With any luck this will help out the panda population which is down to around 1,600 in the wild and their environment is shrinking more by the day.