It is from a show that ran for about 24 years here in Aus and had some really funny segments.
One of them was Red Faces - a "talent" segment with weird and sometimes wonderful acts vying for first prize.
Here is an Australian School's version of the 12 Days of Christmas.
Please note - no animals were harmed in the making of this clip - except for the dead snake - which was already dead (I hope).
What can I say - Aussies have a warped sense of humour.
Put the volume up loud and enjoy
And to all a Very Merry Christmas.