It's about one-seven-hundred-fiftieth as heavy as a Grizzly Bear.
In other words, 454.960 pennyweights is 0.00136 times the weight of a Grizzly Bear, and the weight of a Grizzly Bear is 735 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 335,000 pennyweights. In spite of their tremendous size, grizzly bears can run at speeds of up to 55 kph (34 mph).
It's about 900 times as heavy as a Nail.
It's about one-one-thousandth as heavy as a Cow.
In other words, the weight of a Cow is 1,000 times 454.960 pennyweights.(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 440,000 pennyweights. 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-two-thousand-five-hundredth as heavy as a Car.
In other words, 454.960 pennyweights is 0.0004283 times the weight of a Car, and the weight of a Car is 2,335 times that amount.(for 2009 Ford Taurus; automatic transmission; curb weight)
A 2009 Ford Taurus weighs 1,062,000 pennyweights. The first mass-produced car, the Curved Dash Oldsmobile — introduced in 1901 — weighed just 248,200 pennyweights.
It's about one-three-thousandth as heavy as a Rhinoceros.
In other words, 454.960 pennyweights is 0.00034 times the weight of a Rhinoceros, and the weight of a Rhinoceros is 2,900 times that amount.(for Black rhinoceros, Diceros bicornis) (Adult, male)
An adult black rhinoceros weighs between 1,400,000 pennyweights. Rhinoceros are extremely aggressive — nearly one of every two males will die as a result of fighting with other rhinoceros.
It's about one-three-thousand-five-hundredth as heavy as a Giraffe.
It's about one-four-thousandth as heavy as The Tongue of a Blue Whale.
In other words, 454.960 pennyweights is 0.00026 times the weight of The Tongue of a Blue Whale, and the weight of The Tongue of a Blue Whale is 3,800 times that amount.(Balaenoptera musculus) (adult)
The tongue of a Blue Whale can weigh up to 1,700,000 pennyweights. Despite their tremendous size, blue whales feed almost exclusively on tiny crustaceans called krill and cannot swallow anything much larger than a beach ball.