It's about half as heavy as a Polar Bear.
In other words, 250 kilograms is 0.4840 times the weight of a Polar Bear, and the weight of a Polar Bear is 2.07 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 half as heavy as a Grizzly Bear.
In other words, 250 kilograms is 0.480 times the weight of a Grizzly Bear, and the weight of a Grizzly Bear is 2.08 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 521 kg. In spite of their tremendous size, grizzly bears can run at speeds of up to 55 kph (34 mph).
It's about two-fifths as heavy as a Cow.
In other words, 250 kilograms is 0.370 times the weight of a Cow, and the weight of a Cow is 2.70 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 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 three times as heavy as a Kangaroo.
In other words, 250 kilograms is 2.90 times the weight of a Kangaroo, and the weight of a Kangaroo is 0.340 times that amount.(for red kangaroo, Macropus rufus) (adult, male)
An adult, male red kangaroo weighs up to 85 kg. Fantastic jumpers, red kangaroos can leap horizontally 9 m (30 ft) and vertically 3 m (9 ft) in a single bound.
It's about three-and-a-half times as heavy as a Beer Keg.
In other words, 250 kilograms is 3.4340 times the weight of a Beer Keg, and the weight of a Beer Keg is 0.29120 times that amount.(for US half-barrel, full keg; draft beer; including keg itself, stainless steel)
A typical, half-barrel beer keg weighs 72.80 kg when full. A keg of this size contains 15.5 gallons of beer, or the equivalent of 6.8 cases.
It's about five times as heavy as an Octopus.
In other words, the weight of an Octopus is 0.20 times 250 kilograms.(for Giant Pacific Octopus, Enteroctopus) (Adult, average)
The adult North Pacific Giant Octopus usually weighs around 50 kg. It is the largest octopus species and is known for its considerable intelligence, including the ability to open jars, solve mazes, and mimic other octopuses.
It's about five-and-a-half times as heavy as a Toilet.
In other words, 250 kilograms is 5.730 times the weight of a Toilet, and the weight of a Toilet is 0.1750 times that amount.(KOHLER Round front sitting flush toilet, model #K-11471-0)
The weight of a typical round front sitting flush toilet is 43.6 kg. The Indian town of Musiri in Tamil Nadu state features the world's only paying toilet, which rewards its users up to 10¢ Indian (10 paisas) per visit and uses the waste for compost and fertilizer.