Feral deer activity is on the rise across Eyre Peninsula, with the local Natural Resources office asking members of the public to report any sightings.
Natural Resources Management officer Ben Tucker said the declared pest posed significant environmental and social impacts if they were left uncontrolled.
"They have the ability to disperse over hundreds of kilometres relatively quickly and damage native vegetation, increase soil erosion and reduce biodiversity by impacting vegetation and habitats for threatened species such as malleefowl," he said.
"Not only do they cause environmental damage, but feral deer can carry exotic diseases such as bovine tuberculosis that can infect domestic stock.
They...damage native vegetation, increase soil erosion, and reduce biodiversity.NRM officer Ben Tucker
"And when deer are present near highways, they are a significant hazard for motorists and could easily cause fatal collisions.
"The males are also extremely aggressive during breeding season, and this could pose a threat to public safety for bush walkers, campers and landholders."
If you see feral deer or hear about their presence, contact Mr Tucker on 0428 846 741, or report your sightings online at feralscan.org.au.