In order to investigate the contents of total mercury in zoo animal located near in Seoul, we measured the contents of total mercury in fur and feather collected in zoo animal by the Mercury Analyzer. The contents of total mercury in mammals was $61.56pm 20.32 mu g/kg$, but in birds $659.49pm 162.73 mu g/kg$. Compared with feeding pattern, the contents of total mercury of omniverous and carniverous were detected higher than those of herbiverous in mammals, and also same as in birds. The contents of total mercury of Cuculidae and Ciconidae were detected highestly among classification of family in zoo animal, but those of Camelidae and Cervidae were detected lowestly. Of carniverous, 30.5% was higher than $1000 mu g/kg$, but the ratio of omniverous detected less than $100 mu g/kg$ was 45.5%, and in herbiverous 95.4%.