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.
Answer (^^no offence but that is not right^^) English mastiffs grow until they are three years of age. My English mastiff just turned two years old and he is 185 pounds. The maximum weight limit for a mastiff is 255 pounds. I am 5 foot 2 and my mastiff is about to my knee caps sitting down, and to the top of my legs standing up.