
It's about two times as heavy as The Heart of a Blue Whale
In other words, 420 kilograms is 2.10 times the weight of The Heart of a Blue Whale, and the weight of The Heart of a Blue Whale is 0.480 times that amount.
(Balaenoptera musculus) (adult)(for a 2014 specimen) The heart of a blue whale weighs about 200 kilograms. These hearts pump an estimated 7,100 L (1,875 gal) of blood through the whale's massive body.
It's about twoandahalf times as heavy as a Reindeer
In other words, 420 kilograms is 2.540 times the weight of a Reindeer, and the weight of a Reindeer is 0.3940 times that amount.
(for Rangifer tarandus granti, adult, bull) (a.k.a. Caribou) ()Rangifer tarandus)An adult, male reindeer weighs between 159 and 182 kg. Reindeer undertake a lengthy annual migration, with some herds traveling up to 5,000 km. To all those observing, Merry Christmas from the Measure of Things.
It's about three times as heavy as a Panda Bear
In other words, 420 kilograms is 2.80 times the weight of a Panda Bear, and the weight of a Panda Bear is 0.360 times that amount.
(a.k.a. Giant Panda, Ailuropoda melanoleuca)(Adult, male)An adult, male Giant Panda weighs up to 150 kg. Despite having the digestive system of a carnivore, the panda eats only bamboo and must eat up to 6.4 kg of it per day to compensate for the limited energy the plant provides.
It's about onefourth as heavy as a Car
It's about onefifth as heavy as a Giraffe
In other words, 420 kilograms is 0.2180 times the weight of a Giraffe, and the weight of a Giraffe is 4.590 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 five times as heavy as a Kangaroo
In other words, 420 kilograms is 4.90 times the weight of a Kangaroo, and the weight of a Kangaroo is 0.20 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 onefifth as heavy as a Rhinoceros
In other words, the weight of a Rhinoceros is 5 times 420 kilograms.
(for Black rhinoceros, Diceros bicornis) (Adult, male)An adult black rhinoceros weighs between 1,400 and 2,800 kg. Rhinoceros are extremely aggressive — nearly one of every two males will die as a result of fighting with other rhinoceros. 
