
Vets describe situation ‘like dealing with a thousand heroin addicts’
Thousands of sheep in Australia are believed to have died after eating a poisonous plant that makes them "bash their heads on posts and rocks until they crack open".
The usually-rare toxic plant, misleadingly named the "Darling pea", has spread rapidly in the aftermath of bushfires in New South Wales - which themselves caused devastation for sheep farmers in the area.
Now vets have said that many of the animals which survived the fires face a new and highly addictive threat.
North West Local Land Services regional veterinarian Bob McKinnon told the
Sydney Morning Herald that once sheep started eating the plant they exhibit behaviour "similar to that of a drunk".
"They lose weight to start with and then get staggery, the progression gets worse, they get unco-ordinated and depressed, they don't know where their feet are."
He said that "staring eyes", "head pressing" and "muscle tremors" were other symptoms, until eventually the animals "just go to a post and bang their head on it till they crack their heads open".
The task of bringing in herds that would normally take six hours instead takes "days", Mr McKinnon said. "It's like dealing with a thousand heroin addicts."
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