It's about one-fifth as heavy as a Car.
In other words, 551.15565550 pounds is 0.15130 times the weight of a Car, and the weight of a Car is 6.6090 times that amount.(for 2009 Ford Taurus; automatic transmission; curb weight)
A 2009 Ford Taurus weighs 3,642 pounds. The first mass-produced car, the Curved Dash Oldsmobile — introduced in 1901 — weighed just 851 pounds.
It's about one-tenth as heavy as a Rhinoceros.
In other words, 551.15565550 pounds is 0.120 times the weight of a Rhinoceros, and the weight of a Rhinoceros is 8.30 times that amount.(for Black rhinoceros, Diceros bicornis) (Adult, male)
An adult black rhinoceros weighs between 4,600 pounds. Rhinoceros are extremely aggressive — nearly one of every two males will die as a result of fighting with other rhinoceros.
It's about eight-and-a-half times as heavy as a Dalmatian.
In other words, 551.15565550 pounds is 8.470 times the weight of a Dalmatian, and the weight of a Dalmatian is 0.1180 times that amount.(a.k.a. Dalmatinac, a.k.a. Carriage Dog, a.k.a. Spotted Coach Dog, a.k.a. Firehouse Dog) (FCI standard; male)
The Fédération Cynologique Internationale (FCI) calls for Dalmatians to weigh between 65 pounds. The association of the breed with fire departments (and similarly with Budweiser Beer and its team of Clydesdales) stems from their affinity for horses, having been used historically as carriage dogs capable of guiding horse-drawn fire engines to the sites of blazes.
It's about one-tenth as heavy as a Giraffe.
It's about one-tenth as heavy as The Tongue of a Blue Whale.
In other words, the weight of The Tongue of a Blue Whale is 11 times 551.15565550 pounds.(Balaenoptera musculus) (adult)
The tongue of a Blue Whale can weigh up to 6,000 pounds. Despite their tremendous size, blue whales feed almost exclusively on tiny crustaceans called krill and cannot swallow anything much larger than a beach ball.
It's about one-fifteenth as heavy as a Hippopotamus.
In other words, the weight of a Hippopotamus is 15 times 551.15565550 pounds.(Hippopotamus amphibius) (adult, male)
The average weight of an adult male hippopotamus ranges from 8,270 pounds. 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 twenty times as heavy as a Gold Bar.
In other words, 551.15565550 pounds is 20.09421661 times the weight of a Gold Bar, and the weight of a Gold Bar is 0.04976556287 times that amount.(London Good Delivery bar)
A "London Good Delivery" gold bar — the variety commonly held by Central Banks — should weigh 27.428571430 pounds. The largest gold bar ever produced was minted by Mitsubishi Materials Corporation (a sibling company of the auto manufacturer) in 2005 and weighed 551.15565550 pounds.