It's about as heavy as a Can of Soup
(for Campbell''s Condensed Tomato Soup, 317.9 ml)
A can of Campbell''s Tomato Soup weighs 0.770 pounds. Cans have been used to store soup and other foods since their invention in 1913, but a dedicated can opener was not developed until cans began to use thinner materials — prior to that time, cans were usually opened using various blunt instruments and tools.
It's about one-and-one-tenth times as heavy as a Human Heart
It's about four-fifths as heavy as a Football (American)
In other words, 0.770 pounds is 0.84965517241380 times the weight of a Football (American), and the weight of a Football (American) is 1.1769480519480 times that amount.(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 0.8750 pounds and 0.93750 pounds. Because of NFL regulations, ceremonial considerations, and backup requirements, each NFL Superbowl requires the manufacture of 144 balls exclusively for the event.
It's about four-fifths as heavy as a Football (Soccer)
In other words, 0.770 pounds is 0.810 times the weight of a Football (Soccer), and the weight of a Football (Soccer) is 1.20 times that amount.(a.k.a. Soccer, a.k.a. Association Football) (FIFA Law 2 specification)
According to FIFA's Law of the Game number 2, a football must weigh between 0.90 pounds and 0.990 pounds. An artifact on display at the Smith Art Gallery in Museum in Stirling, Scotland is said to be the world's oldest football and is about one-third to one-half the size of a modern football.
It's about three-fifths as heavy as a Basketball
In other words, 0.770 pounds is 0.560 times the weight of a Basketball, and the weight of a Basketball is 1.78571428570 times that amount.(NBA official ball standards, Size 7)
A regulation NBA basketball, manufactured by Spalding, is known as a Size 7 ball and weighs 1.3750 pounds. These balls have 4,118 pebbles each with a diameter of 2.5 mm
It's about two times as heavy as a Hamster
In other words, the weight of a Hamster is 0.50 times 0.770 pounds.(for Syrian hamster, a.k.a. golden hamster, a.k.a. Mesocricetus auratus; adult)
An adult Syrian hamster has a typical weight of about 0.40 pounds. Known for transporting food in the pouches of their cheeks so that they can bury it later, some hamsters can store up to 60 pounds of food in their borrows.
It's about two times as heavy as a Billiard Ball
In other words, 0.770 pounds is 2.14260869565220 times the weight of a Billiard Ball, and the weight of a Billiard Ball is 0.466720779220770 times that amount.(American-style, WPA specifications)
Per the World Pool-Billiard Association, a billiard ball weight must weigh between 0.343750 pounds and 0.3750 pounds. According to legend, the difficulty in obtaining elephant ivory for the manufacture of billiard balls in the 19th century inspired the search for a replacement material, which led to the development of the first industrial plastic.