hokll, how to get there in public transport?
For public transport, I would recommend Taxi. I must say it's not easy to get there via public BUS because there will be a LONG walk from the main road to the farm.
Anyway, I do know bus# 86 goes to Jalan Kayu. It could be taken from Sengkang Bus Interchange or at the bus-stop right infront of BLK 298A at Sengkang (at Punggol Road) before the exit into TPE. This bus will turn into TPE and exit into Jalan Kayu. At Jalan Kayu, drop at the bus-stop near Ju Eng Home for Senior Citizen (You should see a petrol station on the right first before you see Ju Eng Home, also on the right).
Next will be the tough part....NEED to walk a long way from the small road right infront of Ju Eg Home to the animal resort which I have not tried before. So I suggest you DON'T TRY with small children.
TPE exit jalan Kayu? Can guide driving directionS?
For driving, yes, take TPE exit into Jalan Kayu (NOT the airbase). On Jalan Kayu, after the prata place and all the shop houses, watch out for the Ju Eng Home for Senior Citizen on the right. (You should see a petrol station on the right first before you see Ju Eng Home).
Turn right into the lane (I believe that lane is Seletar West Farmway 4) in front of Ju Eng Home. You will pass by Tong Seng Fa Tropical Fish Supplier on the right before you turn right into Seletar Farmway 5. You will pass Everbloom Mushroom on the left before you see Animal Resort (also on the left). Do watch out for signs once you turn into Seletar West Farmway 4 which will guide you to the Animal Resort.