A sloth is a large, sixty-ton terran-devised earth-moving vehicle.
For civilian use, sloths were equipped with dozer blades.
During the Guild Wars, the Kel-Morian Combine frequently transformed sloths into armored combat vehicles. The dozer blades would be replaced with large cannons and they were also armed with lighter slugthrowers. In order to protect the sloths, they were equipped with angled metal plates.
References[]
Dietz, William C. (April 6, 2010). StarCraft II: Heaven's Devils. Simon & Schuster (Gallery Books). ISBN 978-1-4165-5084-6