[Byron_the_Aussie]

..the red-bellied black snake and the green tree snake with larger heads have killed themselves off through eating cane toads...

Red-bellied black snakes live in the southern part of Australia. Cane toads live in the north. Regards, Byron

[RightWingAtheist]

Actually, the cane toads have killed off most of the red-bellies in the north. It's still found in northern Queensland, although its numbers are dwindling.