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.
The German name of the breed is Deutsche Dogge, or German mastiff. The Great Dane is one of the world's tallest dog breeds. The world record holder for tallest dog was a Great Dane called Zeus (died September 2014; aged 5), who measured 112 cm (44 in) from paw to shoulder.Great Danes are known for seeking physical affection from their owners.he German name of the breed is Deutsche Dogge, or German mastiff. The Great Dane is one of the world's tallest dog breeds. The world record holder for tallest dog was a Great Dane called Zeus (died September 2014; aged 5), who measured 112 cm (44 in) from paw to shoulder.