Cred yr W-HWS bod W-HW'r Nos yn galw arnynt, ond maen nhw methu gweithio mas o ble ddaw'r swn. The Woohoos think a Night-Time Woohoo is calling them - but where is the sound coming from?
9 o ddyddiau ar ôl i wylio
8 o funudau
Gweld holl benodau Yr Whws
