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.
General Appearance Noble and impressive: a large, but not a giant breed. An athletic and substantial dog, of solemn but kindly appearance. The Tibetan Mastiff stands well up on the pasterns, with strong, tight, cat feet, giving an alert appearance. The body is slightly longer than tall. The hallmarks of the breed are the head and the tail.