According to an article in the South Wales Evening Post, the remains of an illegal marijuana factory had been abandoned on the side of a road in the Swansea Valley
County councillor Ioan Richard told the newspaper he was worried a flock of sheep, that had previously caused a nuisance in the village of Craig Cefn Parc, may have eaten some of the plants.
"They're getting in people's gardens and one even entered a bungalow and left a mess in the bedroom," he said.
"I dread to think what will happen if they eat what could well be cannabis plants. We could have an outbreak out of psychotic sheep rampaging through the village.
"I told the council officers to make sure it was reported to the police before removing any evidence of what looks like the dumped remains of a cannabis growing establishment."
A Swansea Council spokesman said the waste has been removed, but could not confirm if any sheep had eaten the plants.

The dumped suspected cannabis plants and a view of the village of Craig Cefn Parc (left). Source: South Wales Evening Post
"The fly-tipped waste has now been removed, but we'd urge anyone with information about who may be responsible to contact either ourselves or South Wales Police," the spokesman said.
"Fly-tipping has a negative impact on local communities, so we're doing all we can to both prevent it and clean up as quickly as possible at known hot spots. We also investigate all cases of fly-tipping and will take enforcement action if there's sufficient evidence."
NOTE: This is an amended version of the article "'Stoned', 'psychotic' sheep go on rampage in Welsh village" published on 26 May, 2016.