If it's male then he's marking his territory to show it's his. If it's female she could be a submissive pee'r and pee's when nervouse

They are very aggressive territorial types.

PRC China uses Renminbi (RMB)
Hong Kong uses Hong Kong Dollar (HKD) China emerging as Asian Tiger and YUAN (Chinese Currency) is
appreciating. I suggest this is the time for Developing countries to say GOODBYE to USDOLLAR being Currency Basket. China's
economy expanded by 11.4 percent in 2007, the fatest rate in 13 years. … Read more