Lesser bilby – aka yallara was a rabbit-like marsupial native to the deserts of Central Australia. They went to extinction in the 1950s-1960s, the main cause being the introduction and rapid breeding of foreign predators like the domestic cat and fox.
The original design was made primarily for being printed as a poster, but you can find modified versions – more suitable for t-shirts, hoodies etc. – in my store:
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