Francium was discovered by Marguerite Perey in 1939 when she was researching the radioactive decay of actinium-227. The discovery took place at the Curie Institute in Paris. The element takes its name from the country of its discovery â France.
Worldâs Biggest Dog, Worldâs Heaviest Dog. Hercules: The Worldâs Biggest Dog Ever According to Guinness World Records. Hercules was recently awarded the honorable distinction of Worlds Biggest Dog by Guinness World Records. Hercules is an English Mastiff and whas a 38 inch neck and weighs 282 pounds.
It depends on what one means by BIGGEST, but typically the heaviest dogs are mastiffs and the tallest are Great Danes or Irish Wolfhounds.p.s lol not it is a chuwawa. 1  In 1991 The Guinness Book of records recognised an English Mastiff who was owned by a man called Chris Euclades from Muswel Hill.