Pictured: The killer swan, named by locals "Mr Nasty" (FRONT) with his family in the pond by Pembroke Castle, west Wales, UK. Sunday 08 July 2018<br />
Re: A vicious killer swan is prowling around Pembroke, determined to see off any threat to his territory by ruthlessly drowning his victims.<br />
So far, he has killed 10 other swans, though many more have been saved from his attacks.<br />
Dubbed by locals “Mr Nasty”  lives on the Castle Pond by Pembroke Castle. <br />
Bird sanctuary worker Maria Evans says she has watched him at work, drowning other swans, breaking their feet or pushing them over a sluice.<br />
In 2010, another killer swan dubbed "Hannibal" had his wings clipped after attacking other swans in the same pond.