▁primary ▁goal ▁as ▁the ▁conservation ▁of ▁end anger ed ▁species . ▁These ▁include ▁animals ▁mentioned ▁in ▁the ▁Bible ▁which ▁are ▁now ▁ext inct ▁in ▁Israel , ▁such ▁as ▁the ▁Asian ▁l ion , ▁the ▁Sy rian ▁brown ▁bear , ▁the ▁A si atic ▁che et ah , ▁the ▁N ile ▁cro cod ile , ▁and ▁the ▁Pers ian ▁fall ow ▁de er . ▁It ▁also ▁includes ▁end anger ed ▁species ▁world wide , ▁such ▁as ▁the ▁Asian ▁ele ph ant , ▁rare ▁species ▁of ▁mac aw , ▁the ▁co ck at iel , ▁the ▁i bis , ▁and ▁the ▁golden ▁l ion ▁t amarin . ▁ ▁Tow ards ▁that ▁end , ▁the ▁zoo ▁undert akes ▁to ▁bre ed ▁animals ▁in ▁capt ivity ▁and , ▁in ▁some ▁cases , ▁re int rodu ce ▁them ▁to ▁the ▁wild . ▁Through ▁this ▁program , ▁the ▁zoo ▁has ▁successfully ▁increased ▁the ▁number ▁of ▁Pers ian ▁fall ow ▁de er ▁in ▁Israel . ▁This ▁species ▁was ▁thought ▁to ▁be ▁ext inct ▁in ▁the ▁ 2 0 th ▁century ▁until ▁a ▁small ▁number ▁of ▁de er ▁were ▁located ▁in ▁Iran ▁in ▁ 1 9 5 6 . ▁In ▁ 1 9 7 8 , ▁four ▁of ▁these ▁de er ▁were ▁brought ▁to ▁Israel ▁and ▁have ▁since ▁increased ▁to ▁several ▁hundred , ▁with ▁a ▁major ▁bre eding ▁col ony ▁at ▁the ▁Jerusalem ▁Bib lic al ▁Z oo . ▁A ▁concurrent ▁project ▁to ▁protect ▁the ▁Neg ev ▁tort o ise ▁from ▁ext inction ▁involves ▁bre eding ▁from ▁artificial ly - inc