Cows that are called by name produce 258 liters more milk than those who are nameless.
British researchers compared production from the country’s National Milk Records with the survey responses of 516 dairy farmers to see if there was a connection between the amount of milk and cow naming. Dairy farmers who called their cows by name got 2,105 gallons (7,938 liters) of milk from their cows, compared with 2,029 gallons (7,680 liters) per 10-month lactation cycle.
"Car on the right has the right-of-way" is true in the US as well - look it up - but the importation of a culture with no rules has badly eroded the observance of this standard.
#12 1000 a day or a year?
Some backward third world country still living in 1932 ?
A gallon is a part of a binary volume measurement system. It is very efficient (ask your computer, which spends way too much time converting to base-10). Volume is also correlated with the weight of water on Earth, "A pint (1/8 gallon [volume]) is a pound (16 ounces [force]) all the world round".
The French had a chance to make the Metric system similarly grounded in the world we live in, but they hated the English I guess so they decided to go with a less useful, arbitrary standard instead.