able . ▁The ▁zoo ▁uses ▁slow - release ▁h orm ones ▁to ▁control ▁its ▁ch imp anze e ▁and ▁mand r ill ▁populations , ▁which ▁are ▁reprodu cing ▁too ▁quickly ▁for ▁the ▁space ▁they ▁occup y ; ▁letting ▁the ▁animals ▁multiply ▁and ▁sending ▁family ▁members ▁to ▁other ▁zo os ▁is ▁un wise , ▁according ▁to ▁veter in ari ans . ▁ ▁New born ▁animals ▁that ▁are ▁threatened ▁or ▁ignored ▁by ▁their ▁parents ▁are ▁raised ▁by ▁the ▁veter inary ▁staff . ▁On ▁ 3 1 ▁December ▁ 2 0 0 8 , ▁for ▁example , ▁a ▁new born ▁t iger ▁cub ▁ignored ▁by ▁its ▁mother ▁was ▁taken ▁home ▁by ▁a ▁staff ▁member ▁to ▁be ▁bott le - f ed . ▁A ▁new born ▁le op ard ▁rejected ▁by ▁its ▁mother ▁spent ▁its ▁days ▁at ▁the ▁zoo ▁and ▁night s ▁at ▁veter in ari ans ' ▁homes ▁for ▁its ▁first ▁three ▁and ▁a ▁half ▁months ▁of ▁life . ▁ ▁The ▁zoo ▁also ▁provides ▁medical ▁treatment ▁for ▁animals ▁and ▁birds ▁injured ▁in ▁the ▁wild . ▁The ▁wild life ▁is ▁either ▁released ▁back ▁to ▁their ▁natural ▁environment ▁( if ▁they ▁are ▁health y ▁enough ) ▁or ▁placed ▁in ▁other ▁zo os . ▁In ▁the ▁late ▁ 2 0 0 0 s , ▁an ▁av i ary ▁was ▁built ▁for ▁e agle ▁ow ls ▁which ▁the ▁zoo ▁is ▁n urs ing ▁back ▁to ▁health . ▁ ▁Public ▁education ▁ ▁Public ▁education ▁is ▁another ▁prime ▁focus ▁of ▁the ▁zoo . ▁According ▁to ▁Sh ai ▁Dor on , ▁director -