Afanc Monster. The Afanc lived in Llyn-yr-Afanc (The Afanc Pool) in the River Conwy. It was a gigantic beast who, when annoyed, was strong enough to break the banks of the pool causing the floods. Many attempts had been made to kill him but it seems that his hide was so tough that no spear, arrow or any man-made weapon could pierce it. http://www.historic-uk.com/HistoryUK/Wales-History/LegendofRiverConwyAfanc.htm Sometimes described as taking the form of a crocodile, giant beaver or dwarf, it is also said to be a demonic creature. The afanc was said to attack and devour anyone who entered its waters. http://www.bbc.co.uk/wales/history/sites/themes/society/myths_afanc.shtml Afanc: In Wales an Afanc is regarded as a kind of crocodile, but it was originally, in the opinion of Sir John Rhys, a kind of monster in human form, as is suggested by the Irish cognate Abhac. (D.R.E., Vol. IV, p. 576.) http://www.mythology.totalroute.net/2007/05/page/2/