Waterways Ireland has issued an alert warning people in Dublin to be on the lookout for a large invasive rodent.
Sightings of the Coypu have been reported near the Ashtown area of the canal close to Castleknock.
This type of rodent – which has bright orange teeth and can grow up to 1 metre in length – weighs up to 9 kilos.
It can carry a number of diseases harmful to humans and domestic animals.
Ferdia Marnell from the National Parks & Wildlife Service is asking the public to report any sightings of the rodent.