LEGO MOC Komatsu D375A-6 Dozer Crawler (8275 mod) by Cyborg-Samurai | Rebrickable - Build with LEGO
LEGO TECHNIC: Motorized Bulldozer (8275) for sale online | eBay
Amazon.com: LECPOP 5 in 1 STEM Projects for Kids, Building Block Sets for Boys, Construction Toys for Kids Ages 8-14, RC Bulldozer/Robot/Dump Trucks Engineering Toys, Ideal Gifts for Boys & Girls :
My collection of Lego Technics with 3 more on the way that I bought off E-bay. Lego technic 8275 motorized bulldozer, lego technic 42009 mobile crane mk II and lego technic 8258