The only ones I can think of are British White, American White Park or Red Poll. There may be another breed (or two...) out there that you're thinking of, since there is more than one breed that is capable of having "exceptionally docile bulls."
Just take note though: no bull should be trusted, no matter how "exceptionally docile" they are.
This is primarily of personal preference. Herefords are the most well known to have great temperaments, as well as Brown Swiss/Braunvieh, Galloway, Red Poll and Shorthorn. Many other cattle of other breeds that are generally regarded as not the best temperament may still have arguably as good temperaments as the aforementioned breeds.
Yes. All cattle, regardless of breed, are vertebrates.
Holstein cows are generally bred to be quite docile as they need to be handled at least twice a day for milking. The caveat is that they would be more docile if handled when young on a daily basis, which does not generally happen in large commercial dairy herds. Holstein bulls can be quite agressive...as can most bulls.
That all depends on how big your cow herd is and how many bulls you have to breed them with.
Where other brahman cows and cattle live of course.
The discovery of Longhorn cattle, a breed of cattle descended from cows and bulls left by early Spanish settlers in the American Southwest, triggered the growth of the cattle industry.
Cows are cattle, as they are females only, while bulls are male cattle. Therefore, you cannot say for certain which is larger as one is a grouping, the other a specific gender of the species. Bulls are usually larger than cows, especially if referring to cows and bulls of the same breed, and not between breeds.
It is a bacteria that causes females to consistently abort when bred and bulls to be unable to breed. Can vaccinate prior to breeding.
Limousin cattle originated from France, specifically from the Limousin and Marche regions. Locally, though, Limousin cattle come from other Limousin cattle, specifically cows and bulls that are of the Limousin breed.
That all depends on the breed. Bulls can have a height anwer from a tiny two feet tall like with miniature cattle, to as tall as over eight feet at the shoulder, like with Chianina bulls.
Absolutely not! Angus is a breed, which encompasses not just steers, but also cows, bulls, heifers and calves of the same breed. The Angus breed are black polled cattle that originated from Scotland and is the breed that has gained huge popularity in the United States.
Bulls eat the same things that Cows and Cattle do because they themselves are cattle. See the related question below.
That depends on the breed. Usually heifers should be bred when they are between 15 and 18 months of age, and bulls can be used for breeding when they are around 10 to 14 months of age.