It's about 60,000 times as heavy as a Cow.
In other words, 40,000 tonnes is 59,000 times the weight of a Cow, and the weight of a Cow is 0.0000170 times that amount.(for Holstein, a.k.a. Holstein Friesian, a.k.a. Friesian, Bos primigenius) (adult, heifer)
A mature Holstein cow (the well-known black-and-white, spotted breed of cow) typically weighs 0.680 tonnes. President William Howard Taft (1909 - 1913) kept a Holstein cow named Pauline Wayne on the White House grounds — a gift from a Wisconsin senator and the source of the First Family's milk.
It's about 75,000 times as heavy as a Grizzly Bear.
In other words, 40,000 tonnes is 76,800 times the weight of a Grizzly Bear, and the weight of a Grizzly Bear is 0.0000130 times that amount.(a.k.a. brown bear, a.k.a. silver bear, Ursus arctos horribilis) (Adult, male, coastal area population average)
An adult, male grizzly bear from a coastal area (where food is plentiful) can weigh up to 0.5210 tonnes. In spite of their tremendous size, grizzly bears can run at speeds of up to 55 kph (34 mph).
It's about 80,000 times as heavy as a Polar Bear.
In other words, 40,000 tonnes is 77,500 times the weight of a Polar Bear, and the weight of a Polar Bear is 0.00001290 times that amount.(Ursus maritimus) (adult, male)
An adult, male polar bear weighs between 0.5160 tonnes. Polar bears are so heavily insulated by their 9.9 cm (3.9 in) layer of blubber that they are often difficult to detect using infrared photography sensors.
It's about 90,000 times as heavy as a Grand Piano.
In other words, 40,000 tonnes is 89,000 times the weight of a Grand Piano, and the weight of a Grand Piano is 0.0000110 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 0.450 tonnes. Well-made pianos such as this may last 75 to 100 years.
It's about 95,000 times as heavy as a Horse.
In other words, the weight of a Horse is 0.0000110 times 40,000 tonnes.(Equus ferus caballus) (Arabian, adult)
n Arabian riding horse (or similar breed) weighs between 0.420 tonnes. During races, horses must carry jockeys and their equipment, which in the Kentucky Derby, for example, can weigh up to 0.054 tonnes.
It's about 150,000 times as heavy as a Pig.
In other words, the weight of a Pig is 0.00000630 times 40,000 tonnes.(Domestic pig, Sus scrofa domesticus, a.k.a. S. domesticus) (adult)
Domestic pigs weigh between 0.250 tonnes. 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 150,000 times as heavy as a cubic meter of Snow.
In other words, the weight of a cubic meter of Snow is 0.00000590 times 40,000 tonnes.(Freshly fallen, standard conditions; measurements taken in Norway, 1965-68)
One cubic meter of freshly fallen snow under standard conditions weighs an average of 0.230 tonnes. Assembled in 2008, the world record largest snowman was constructed of 5,900 tonnes of snow and stood 37.21 m (122.1 ft) tall.