A keeper brushes a hippo's teeth at the Shanghai Zoo November 3, 2010. The hippo has its teeth cleaned three times a week to reduce the chance of mouth diseases, local media reported. Picture taken November 3, 2010.
A keeper brushes a hippo's teeth at the Shanghai Zoo November 3, 2010. The hippo has its teeth cleaned three times a week to reduce the chance of mouth diseases, local media reported. Picture taken November 3, 2010.
source :daylife
photo: Reuters photo