Tracked skidder. They come in different sizes and shapes.
http://www.google.com/imgres?imgurl=http://www.cat.com/cda/files/1154757/7/track-skidder.jpg&imgrefurl=http://www.cat.com/equipment/skidders/track-skidders&h=240&w=320&sz=31&tbnid=zf-OQ7F2gy9w5M:&tbnh=112&tbnw=149&prev=/search%3Fq%3DTracked%2Bskidder%26tbm%3Disch%26tbo%3Du&zoom=1&q=Tracked+skidder&usg=__Hkx—_odCpWvCEMT7A7G_JdHSZU=&docid=pjRTjKvMEL5PyM&sa=X&ei=IHiNUfCjKK_MigLh5oGQCw&ved=0CDYQ9QEwAA&dur=2830
True. But thats a dozer in the pic. Look at the blade. Granted, Dozers are used/rigged to skid too. But that’s a dozer.
