I believe the equipment you're seeing is just ordinary forestry harvesters (https://en.wikipedia.org/wiki/Harvester_%28forestry%29 https://en.wikipedia.org/wiki

I believe the equipment you're seeing is just ordinary forestry harvesters (https://en.wikipedia.org/wiki/Harvester_%28forestry%29 https://en.wikipedia.org/wiki/Harvester_%28forestry%29) then. They're typically wheeled or tracked. Not sure if having legs is much of an advantage, although it sure looks cool. One big thing about this kind of equipment is controlling ground pressure. I guess the feet of a legged robot can have larger surface area (and thus lower pressure) than the contact surfaces of a wheeled vehicle so that might be an advantage.