What are the animals you do not want to miss? Something local and from this region of South East Asia if you're not from here? Unique animals like the white tiger? Your route can start from the free ranging Orang Utans (take picture with them?) and then moving left or right but whichever way do not miss these animals which I think are unique and a must see.
Firstly of course the Orang Utans, then the White tiger, if moving from left, the Babirusa unique to Indonesia,wild hogs with 4 to 5 tusks instead of the usual 2,the Malaysian Tapir, the baboons from the Great Rift Valley of Ethiopia, the Pygmy Hippos, the mermaids of the sea, the Manatee (Dugongs), the Komodo Dragons, the Probosis Monkeys,and, the white Rhino.
At 7pm the Night Safari (which is just beside the Day Zoo)starts and you can carry on seeing animals that comes out at night.