It's about 4,000 times as heavy as a Cow
In other words, the weight of a Cow is 0.00025 times 0.00273 megatonnes.(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 0.000000680 megatonnes. 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 5,000 times as heavy as a Grizzly Bear
In other words, 0.00273 megatonnes is 5,240 times the weight of a Grizzly Bear, and the weight of a Grizzly Bear is 0.000191 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 0.0000005210 megatonnes. In spite of their tremendous size, grizzly bears can run at speeds of up to 55 kph (34 mph).
It's about 5,500 times as heavy as a Polar Bear
In other words, 0.00273 megatonnes is 5,290 times the weight of a Polar Bear, and the weight of a Polar Bear is 0.000189 times that amount.(Ursus maritimus) (adult, male)
An adult, male polar bear weighs between 0.0000005160 megatonnes. 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 6,000 times as heavy as a Grand Piano
In other words, 0.00273 megatonnes is 6,100 times the weight of a Grand Piano, and the weight of a Grand Piano is 0.00016 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 0.000000450 megatonnes. Well-made pianos such as this may last 75 to 100 years.
It's about 6,500 times as heavy as a Horse
In other words, the weight of a Horse is 0.00015 times 0.00273 megatonnes.(Equus ferus caballus) (Arabian, adult)
n Arabian riding horse (or similar breed) weighs between 0.000000420 megatonnes. During races, horses must carry jockeys and their equipment, which in the Kentucky Derby, for example, can weigh up to 0.0000000540 megatonnes.
It's about 10,000 times as heavy as a Pig
In other words, 0.00273 megatonnes is 11,000 times the weight of a Pig, and the weight of a Pig is 0.0000910 times that amount.(Domestic pig, Sus scrofa domesticus, a.k.a. S. domesticus) (adult)
Domestic pigs weigh between 0.000000250 megatonnes. 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 10,000 times as heavy as a cubic meter of Snow
In other words, 0.00273 megatonnes is 12,000 times the weight of a cubic meter of Snow, and the weight of a cubic meter of Snow is 0.0000830 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 0.000000230 megatonnes. Assembled in 2008, the world record largest snowman was constructed of 0.0059 megatonnes of snow and stood 37.21 m (122.1 ft) tall.