How heavy is 0.000 tonnes?

The Fédération Cynologique Internationale (FCI) calls for dachshunds to weigh about 0.009 tonnes. Despite of their small size, a 2008 survey conducted by the University of Pennsylvania named dachshunds as the most aggressive dog breed.

A "London Good Delivery" gold bar — the variety commonly held by Central Banks — should weigh 0.01244139072 tonnes. The largest gold bar ever produced was minted by Mitsubishi Materials Corporation (a sibling company of the auto manufacturer) in 2005 and weighed 0.250 tonnes.

The weight of a United States penny is 0.00000250 tonnes. According to a 2010 report by the United States Mint, the cost of manufacturing and distributing a penny is $0.0179 — more than its face-value.

A single ISO 216 B8-size playing card weighs 0.00000180 tonnes. Although this size is the most common home playing card, many casinos use "bridge size" cards — 2,640 sq. mm (4.036 sq. in) smaller in area.

Notwithstanding the tremendous variation in sizes and materials, a typical paperclip weighs about 0.00000140 tonnes. The country of Norway has used the paper clip as something of a national symbol since the end of World War II based on the erroneous notion that the paperclip was invented by a Norwegian, Johan Vaaler. However, the paperclip had already been in existence for at least 30 years by the time of Vaaler patented his paperclip design.

The Fédération Cynologique Internationale (FCI) calls for Dalmatians to weigh between 0.0295 tonnes. 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.

Made of sugar, corn syrup, and pectin, a single jelly bean weighs about 0.00000110 tonnes. President Ronald Reagan cited jelly beans as his favorite candy and 3.20 tonnes of the candies were served at his first inauguration in 1981.

The weight of a typical round front sitting flush toilet is 0.0436 tonnes. 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.

A two-inch finishing nail weighs 0.000000790 tonnes. Nails have been in use for more than 5,400 years and were ven used as a medium of exchange in ancient times.

The adult North Pacific Giant Octopus usually weighs around 0.05 tonnes. 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.

A typical, half-barrel beer keg weighs 0.0728 tonnes when full. A keg of this size contains 15.5 gallons of beer, or the equivalent of 6.8 cases.

An adult, male red kangaroo weighs up to 0.085 tonnes. Fantastic jumpers, red kangaroos can leap horizontally 9 m (30 ft) and vertically 3 m (9 ft) in a single bound.

An adult, male Giant Panda weighs up to 0.150 tonnes. Despite having the digestive system of a carnivore, the panda eats only bamboo and must eat up to 0.0064 tonnes of it per day to compensate for the limited energy the plant provides.

An adult, male reindeer weighs between 0.1660 tonnes. 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.

(for a 2014 specimen)
The heart of a blue whale weighs about 0.20 tonnes. These hearts pump an estimated 7,100 L (1,875 gal) of blood through the whale's massive body.