It's about one-fortieth as heavy as a Giraffe
In other words, 50 kilograms is 0.0259 times the weight of a Giraffe, and the weight of a Giraffe is 38.60 times that amount.(Giraffa camelopardalis reticulata) (adult, male, maximum of range)
An adult, male giraffe can weigh up to 1,930 kg. Reaching 5.5 m (18 ft) in height by adulthood, giraffe calves can grow as much as 3 cm (1 in) per day.
It's about one-thirty-fifth as heavy as a Car
It's about one-fifteenth as heavy as a Cow
In other words, the weight of a Cow is 14 times 50 kilograms.(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 680 kg. 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 one-tenth as heavy as a Grizzly Bear
In other words, the weight of a Grizzly Bear is 10.40 times 50 kilograms.(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 521 kg. In spite of their tremendous size, grizzly bears can run at speeds of up to 55 kph (34 mph).
It's about one-tenth as heavy as a Polar Bear
In other words, 50 kilograms is 0.0969 times the weight of a Polar Bear, and the weight of a Polar Bear is 10.30 times that amount.(Ursus maritimus) (adult, male)
An adult, male polar bear weighs between 352 and 680 kg. 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 one-tenth as heavy as a Grand Piano
In other words, 50 kilograms is 0.110 times the weight of a Grand Piano, and the weight of a Grand Piano is 9.10 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 450 kg. Well-made pianos such as this may last 75 to 100 years.
It's about one-tenth as heavy as a Horse
In other words, 50 kilograms is 0.120 times the weight of a Horse, and the weight of a Horse is 8.30 times that amount.(Equus ferus caballus) (Arabian, adult)
n Arabian riding horse (or similar breed) weighs between 380 and 450 kg. During races, horses must carry jockeys and their equipment, which in the Kentucky Derby, for example, can weigh up to 54.4 kg.