Useful dinos

[MysticForces]

The PixArk wiki is a bit lacking in information. Can everyone please share which dinos do useful things. Example: apparently the dung beetle produces oil if you put feces in its inventory.

I'm more looking for PVE advice, so knowing that the TRex is a superior killing machine is not what I'm after.

Other things that don't need mentioning are things like Dodos that you put in a Dodo Nest or Phiomias in a Phiomia Hut.

[Zem]

Useful dinosaurs for PvE:

Carried and halves inventory weight: Firefly (also provides light), Rabbit (provides cold resist I think?)
Tree harvesting: Trike or Stego
Magic harvesting: Thorny Boar?
Mobile furnace: Armadillo
Mobile fridge: Ice Elemental
Tunnel digging: Megarock or Giant Mole?
General Utility: Mantis
Wandering/Idling through dangerous areas: Shadow Leopard subspecies
Superior killing machineMobile fortress/carrier/home: Quetzal
Resource production: Dodo/Turkey/Phiomia/Dungbeetle/Slime/Petrol Slime

If nothing else, always have a Firefly with you -- It provides light which means you don't have to resort to a mining hat when digging or putting torches everywhere, can carry and extend food life, and while it can take a long time to increase its carry weight to 300+, that means giving it 3 stacks of Quartz will only weigh you down by 150. A good starting weight of ~200 means you can get there quicker.