The Freddo frog reference article from the English Wikipedia on 24-Apr-2004
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Freddo frog

Helping orphans the way you would do it
Cadbury's Freddo Frog was invented in the 1930s, when Harry Melbourne, employee of McPherson's Chocolates, decided they needed a new chocolate range. Statistics showed that a mouse was wanted most, but Harry knew that wouldn't sell.

His reasoning was that women and children were afraid of mice, and wouldn't like it. Thus, Freddo was born.

Today Freddo is Australia’s most popular children’s chocolate.