Brushing up: Hippo's teeth scrubbed with car wash brush in dental demo at Osaka zoo
OSAKA -- A zookeeper demonstrated the daring task of brushing a hippo's teeth during a special event at Osaka Tennoji Zoo in this western Japan city's
Tomas Kauer - News Moderator 
OSAKA -- A zookeeper demonstrated the daring task of brushing a hippo's teeth during a special event at Osaka Tennoji Zoo in this western Japan city's
