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 mastiff is also one of the most powerful dog in the world. My friends mastiff Abraham  was the top weight pull dog in North America in 2004 PULLING 7300 POUNDS. The Old English Mastiff is the LARGEST breed of dog in the world..They can weigh anywhere from 110 pounds to the 343 pounds. Zorba,an English mastiff ,held the world record of the world's largest dog. Although most Mastiff males weigh around 160-230 pounds and females around 120-190 pounds.The height of a mastiff can range from 25 inches at the shoulder to 36 inches.s a Mastiff breeder, our kennel produces quality puppies. WHAT IS THE LARGEST BIGGEST HEAVIEST BREED OF DOG IN THE WORLD. The Old English Mastiff is the LARGEST breed of dog in the world.