If you want to go and farm up mountains and are in a tribe of 10or more people it is very easy to get resources as you can up their weight a ton. Have at least 2000 stamina and quite high movement speed. It’s also worth having around 1600 health. Picture this. You are up a mountain with ten tribe members on the diplo. They all have... let’s say 2 metal picks. Flak armour, a metal sword and a assault rifle with a lot of bullets. 5 gets Of and starts mining. A Rex pops up and the still boarded 5 people shoot it. I when it gets too close diplodocus shoves it back and it dies of being shot. And you carry on getting metal and other resources.
Good tanks for raids! Use as a frontline attack in front of Brontos or Gigas etc, can push tames back when attacking so you can use this for defence too. Their high speed allows you to run from turrets when on low health. Worth it when passive tamed as the low kib needed means you can tame more.
Not really useful tame, but they don't do any damage unless they push you off a cliff. Their attacks are all pushing, no damage. Awesome giant walking prime meat machines to kill and harvest when you are taming something useful. Or tame one and name it the Magic School Bus and drive you and your entire tribe off a cliff into the Volcano.