Both of these Dinos Have a Toggle Smelting/Crafting Option in their MultiUse Wheel (Press and Hold E) This Turns Auto Crafting on them On or Off, Default is Off as this keeps the Dinos from stalling out and the crafting Breaking on Server Restart.

Both of these Dinos can also harvest Extra Resources types Anky from Trees and Bushes
Doed From Trees and Rocks and Normal things from Bushes.

Keep in Mind that the Robot Stego , Prime Pegasus Kick Also Harvest similarly.