On the 19th episode of Legend, Amy tells same the tale of the Dobhar Chu.

Like otters? Like dogs? Maybe even crocodiles? Then this legend is for you! The Irish legend of the Dobhar Chu is all about avenging fallen family members. This speed demon of a creature will chase you across land, water, and even into another country even if you harm its mate or parents. Come listen to some eye witness accounts and let us introduce you to Ronan Coghlan.

Never forget if you have a knife in your pocket.