Thousands, often too many to count. One ranch would have to drive over 500 cattle to the railroad station to be sent to slaughter.
one
There was about 3 to 20 cowboys in a cattle drive. Depending on how much cattle there was varied on the amount of cowboys.
Usually large numbers of cattle which can range from 100-400 and up depending on how large the herd is.
The ranch manager/owner of the cattle.