Oxen teams numbering 16 to 20 animals were a common sight in Northern California lumber camps until nearly 1895, as they pulled giant redwood logs from the forests along skid roads made of small green logs. Here is an oxen team at work in the woods of Humboldt County; the sure footed oxen replaced the horse as a tool to drag these giant redwoods out of the woods. They were later replaced by the Steam Donkey. The man tending the oxen was called a "Bull Wacker " a team of oxen were all males or Bulls as they are called. A Bull Wacker was one of the higher paid Loggers. Also there was a "Grease Monkey" a low paid man who greased the skid roads which were made of small logs used for roads, this allowed the logs to slide easily.