It's about as heavy as an Octopus
(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 one-and-one-fifth times as heavy as a Toilet
In other words, 50 kilograms is 1.150 times the weight of a Toilet, and the weight of a Toilet is 0.870 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.
It's about seven-tenths as heavy as a Beer Keg
In other words, 50 kilograms is 0.68680 times the weight of a Beer Keg, and the weight of a Beer Keg is 1.4560 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 one-and-seven-tenths times as heavy as a Dalmatian
In other words, 50 kilograms is 1.690 times the weight of a Dalmatian, and the weight of a Dalmatian is 0.5920 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 27 and 32 kg. 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 three-fifths as heavy as a Kangaroo
In other words, 50 kilograms is 0.590 times the weight of a Kangaroo, and the weight of a Kangaroo is 1.70 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 one-third as heavy as a Panda Bear
In other words, the weight of a Panda Bear is 3 times 50 kilograms.(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 three-tenths as heavy as a Reindeer
In other words, 50 kilograms is 0.3020 times the weight of a Reindeer, and the weight of a Reindeer is 3.310 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.