Gastrointestinal parasites are affecting the animals including the wildlife. The major consequence of the parasites is that they cause a large number of morbidity and mortality of the animals and same was the case with deer. Deer were being highly infested by the endo-parasites and having diverse effects in their health. By doing different experimental trails we can reduce the burden of the helminths. Different anthelminthics can help in reducing the parasitic load and make the animal heather. By introducing a proper and regular de-worming progam, i.e after every three months, the problems by the endo-parasites can be reduced. Lesser the helminths are, greater the animal feel.