The fuel used in bulldozers is diesel.
Bulldozers are used for clearing land, moving dirt, etc
There are many different types of businesses that sell bulldozers to their customers. The pricing of the bulldozers depends on the usage and how many days you are using it.
bulldozers and dredgers
Caterpillar tracks.
bulldozers...cranes...backhoes...
Bulldozers are commonly used for moving objects from one place to another. They are used to push dirt, soil, sand and rocks. They can be found on construction sites, in mines and quarries and at excavation sites.
bobcat is a brand name for earth movers, bulldozers and yes, excavators.
once upon a forest? http://en.wikipedia.org/wiki/Once_Upon_A_Forest
Yes, bulldozers can have wheels, but they are typically designed with tracks instead. Wheeled bulldozers are less common and are usually used in specific applications where mobility on paved surfaces is required. Track systems provide better traction and stability on rough terrain, making them the preferred choice for most construction and earth-moving tasks.
This gas is methane (CH4).
Butane & Propane
You can find bulldozers for sale at sites like eBay, where people sell their Bulldozers second hand. You can get them at sites like EquipmentAlley, and ConstructionSales. There are also other options like from JVC.