each animamal is an indidivida different character, and a different t speed at whichch y leararn new thingsgsthey'r're like one big family. reporter: veterinarian andhani hartanti is going to check dora over. not only has she been long weig, , she's also beeeen ving difficultieses climbing ---- probablyly because shehe was a ght with ather orangutan and is injured.. andhi:i: abo threeeeeeks ago, onof our sff fouound h sufferers something, or a probl. and wewe knew thatat the rightt has s open wounund, deep enouh so we neneed to stitch so o then can heheal. reporter: thnameme othis national pk k -- bit tigiguluh -- means 0 0 hill 's one of sumatrs lalargt remaining loanand raforestst-- and one ofhe l lasremaining sanctuieies for orangugutans. pepeter: if oranangutans can s e hehere, then tigigers, elepha, ananall the other animals will beututomaticly p protected, tot. that's why it's so impmportanto preserve whahat we have hehere reporter: peter and andhani continue to observe the ororthe prproject will only beie considered s successf ththe yea. animals s have offspriring. peteter: our hope e