It's about one-fifteenth as heavy as a Hippopotamus
In other words, 250 kilograms is 0.07 times the weight of a Hippopotamus, and the weight of a Hippopotamus is 15 times that amount.(Hippopotamus amphibius) (adult, male)
The average weight of an adult male hippopotamus ranges from 3,000 to 4,500 kg. Appearances to the contrary, adult hippos cannot swim or float in water; they actually move by leaping and walking across lake bottoms at about 8 kph (5 mph).
It's about one-twenty-fifth as heavy as an Elephant
In other words, 250 kilograms is 0.04 times the weight of an Elephant, and the weight of an Elephant is 24 times that amount.(for African bush elephant, Loxodonta africana) (Adult, bull)
A bull African bush elephant weighs about 6,100 kg. Among African elephants, both males and females have tusks (whereas female Asian elephants, Elephas maximus, do not have tusks) which can grow to 3 m (10 ft) and typically weigh about 4,000 kg
It's about one-thirty-fifth as heavy as a Tyrannosaurus rex
In other words, 250 kilograms is 0.028 times the weight of a Tyrannosaurus rex, and the weight of a Tyrannosaurus rex is 35.2 times that amount.(for FMNH PR 2081, a.k.a. "Sue") (a.k.a. Tyrannosaurus, a.k.a. T-Rex) (estimated live weight)
The notable Tyrannosaurus specimen housed at the Field Museum of Natural History in Chicago, Illinois, "Sue," is estimated to have weighed about 8,800 kilograms while alive. A renowned predator in popular culture, the teeth of tyrannosaurus rex were up to 33.02 cm (13 in) long.
It's about one-forty-fifth as heavy as an Anchor of a Cruise Ship
In other words, 250 kilograms is 0.022 times the weight of an Anchor of a Cruise Ship, and the weight of an Anchor of a Cruise Ship is 45.2 times that amount.(for QE2 forward anchor, a.k.a. RMS Queen Elizabeth 2)
Each of the forward anchors of the RMS Queen Elizabeth 2 weighs 11,300 kg. The anchor of the QE2 now sits in front of the Holyrood Church in Southampton, England, United Kingdom, along a pedestrian tourist route known as "the QE2 mile."
It's about one-three-hundredth as heavy as The Space Shuttle
In other words, 250 kilograms is 0.004 times the weight of The Space Shuttle, and the weight of The Space Shuttle is 290 times that amount.(for Endeavour, a.k.a. OV-105, a.k.a. Orbiter Vehicle-105) (empty weight, excluding main engines)
When empty, the space shuttle Endeavour weighs 71,000 kilograms. The shuttle's spacious cargo bay carried the Chandra X-ray Observatory into orbit in 1999 — a payload that weighed 19,737 kg.
It's about one-four-hundredth as heavy as a Blue Whale
In other words, 250 kilograms is 0.0024 times the weight of a Blue Whale, and the weight of a Blue Whale is 418 times that amount.(Balaenoptera musculus)
Blue whales weigh between 73,000 and 136,000 kg. The largest mammal to have ever lived, blue whales feed almost exclusively on krill — tiny invertebrates weighing about 0.001 kilograms each.
It's about one-five-hundred-fiftieth as heavy as The Statue of Liberty (without base)
In other words, 250 kilograms is 0.002 times the weight of The Statue of Liberty (without base), and the weight of The Statue of Liberty (without base) is 560 times that amount.(a.k.a. Liberty Enlightening the World, a.k.a. La Liberté éclairant le monde) (total weight, including foundation)
The total weight of the Statue of Liberty — the Statue's copper and framework only, excluding the base — is roughly 140,000 kg. The statue was designed using an optical trick known as "forced perspective" to make the statue appear proportionally correct when viewed from its base and is, in actuality, disproportionately large at the top.