I'm afraid Brunei is a lot more civilised these days.
Headhunting is generally frowned upon and though the Iban tribe and others have heads in their longhouses, they tend to be 50 or more years old now.
Snakes we have - I recently had a Equatorial black spitting cobra in the garden. I shooed him off with my umbrella - like a true English gent. "Begone! Damn yer eyes!". Didn't want that up the old exhaust pipe!
We do get lots of monkeys, wild pigs, civit cats, mouse deer, big monitor lizards and crocodiles. Lots of crocodiles. There is even one at the local supermarket - he lives on the riverbank and is a bit of a celebrity!
Also we have a lot of jungle - great for trekking.
We also have SE Asia's longest over water road bridge and the worlds largest water village.