What is this Aussie movie?

Mark

Not blessed, or merciful
Apr 11, 2001
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Sarf Lundin, Innit
Saw this posted elsewhere, and I have no idea what film they're referring to, so thought maybe one of y'all would. Any ideas?

The plot from my hazy memory is that a schoolboy's (could be girl) border collie goes missing and it's all about how he finds it. I think it was set in a small country town. We were shown it at school around 1984/85. The dog to my memory (and the movie, I thought) was called Gypsy. I've searched the Australian database of movies for that time and it doesn't seem to exist. The theme song went a little like, "Gypsy, Gypsy, Gypsy, Gypsy, where has my dog Gypsy gone?" (Repeat adinfinitum). At the end, he gets the dog back.
 
It can be the most frustrating experience. I myself am haunted by memories of a movie about pet hamster/guinea pig type things that escape from their cage and go on an adventure. Wish I could remember what it was.