I always thought there was something funny going on in the old Waratah National Park...
[later] I went looking and found more info than I'll ever need to know about Skippy: (at least the "official" version, anyway :p )
http://www.classicaustraliantv.com/Skippy.htm
Wow. I didn't realise they started making it in 1968. I thought it was much later. It would have been about 10 years old when I started watching it.