Adelaide Zoo are currently looking into the mysterious deaths of seven female quokkas and two yellow-footed rock wallabies last month.
According to the zoo, toxicology reports are being processed in an attempt to distinguish a cause of death.
Zoos SA released a statement saying they believe “plant toxicity” is likely to blame for the sudden deaths.
The surviving animals including three male quokkas and an 11-month-old joey have been moved out of the exhibit.
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