It's about as heavy as a cubic meter of Snow
In other words, 500 pounds is 0.99 times the weight of a cubic meter of Snow, and the weight of a cubic meter of Snow is 1 times that amount.(Freshly fallen, standard conditions; measurements taken in Norway, 1965-68)
One cubic meter of freshly fallen snow under standard conditions weighs an average of 510 pounds. Assembled in 2008, the world record largest snowman was constructed of 13,000,000 pounds of snow and stood 37.21 m (122.1 ft) tall.
It's about nine-tenths as heavy as a Pig
In other words, 500 pounds is 0.91 times the weight of a Pig, and the weight of a Pig is 1.1 times that amount.(Domestic pig, Sus scrofa domesticus, a.k.a. S. domesticus) (adult)
Domestic pigs weigh between 550 pounds. The titular character "Babe the pig" in the 1995 family film was played by 48 different American Yorkshire piglets due to the length of filming and the rate at which piglets reach adulthood.
It's about one-and-one-tenth times as heavy as The Heart of a Blue Whale
In other words, 500 pounds is 1.1 times the weight of The Heart of a Blue Whale, and the weight of The Heart of a Blue Whale is 0.91 times that amount.(Balaenoptera musculus) (adult)
(for a 2014 specimen)
The heart of a blue whale weighs about 440 pounds. These hearts pump an estimated 7,100 L (1,875 gal) of blood through the whale's massive body.
It's about one-and-two-fifths times as heavy as a Reindeer
In other words, 500 pounds is 1.37 times the weight of a Reindeer, and the weight of a Reindeer is 0.73 times that amount.(for Rangifer tarandus granti, adult, bull) (a.k.a. Caribou) ()Rangifer tarandus)
An adult, male reindeer weighs between 365 pounds. Reindeer undertake a lengthy annual migration, with some herds traveling up to 5,000 km.
To all those observing, Merry Christmas from the Measure of Things.
It's about one-and-a-half times as heavy as a Panda Bear
In other words, 500 pounds is 1.5 times the weight of a Panda Bear, and the weight of a Panda Bear is 0.67 times that amount.(a.k.a. Giant Panda, Ailuropoda melanoleuca)(Adult, male)
An adult, male Giant Panda weighs up to 330 pounds. Despite having the digestive system of a carnivore, the panda eats only bamboo and must eat up to 14 pounds of it per day to compensate for the limited energy the plant provides.
It's about half as heavy as a Horse
In other words, 500 pounds is 0.54 times the weight of a Horse, and the weight of a Horse is 1.9 times that amount.(Equus ferus caballus) (Arabian, adult)
n Arabian riding horse (or similar breed) weighs between 930 pounds. During races, horses must carry jockeys and their equipment, which in the Kentucky Derby, for example, can weigh up to 120 pounds.
It's about half as heavy as a Grand Piano
In other words, 500 pounds is 0.5 times the weight of a Grand Piano, and the weight of a Grand Piano is 2 times that amount.(for Steinway & Sons, Model D Concert Grand Piano)
A Grand Piano, of the kind used for concert performances in large music halls, weighs 990 pounds. Well-made pianos such as this may last 75 to 100 years.