Wheeled earthlings are brightly colored, often ornamented as predators, and are clearly capable of killing -- but they cannot feed themselves; they rely entirely on bipedal earthlings to suck food from the ground, prepare it, and feed them through tubes.
Also: When a wheeled earthling kills a prey animal such as a deer, bipedal earthlings typically regard that prey animal as cursed and do not eat it, even though it is made of meat. Bipedals only eat prey animals that have been killed by bipedals, whether in the wild or in specialized killing structures.
Even the ones that are based on an electrical metabolism mostly need bipedals to feed them. Although there is some evidence they can feed on their own with an alternative carnivore metabolism, as can be seen in this reputable earthing publication:
"That's the idea. That's the message they're sending out by radio. 'Hello. Anyone out there? Anyone home?' That sort of thing."
"They actually do talk, then. They use words, ideas, concepts?"
"Oh, yes. Except they do it with meat."
"I thought you just told me they used radio."
"They do, but what do you think is on the radio? Meat sounds. You know how when you slap or flap meat it makes a noise? They talk by flapping their meat at each other. They can even sing by squirting air through their meat."
Their houses are all wrong. They make 'em weak and they stick out of the landscape like a eyesore. "Oooo, look at me, look at my house" and almost every single human wants a house like that. Houses shouldn't attract attention. If they do, you're doing it wrong. Do you think a bird is safer or more exposed with a bright pink nest?
Hobbits, on the other hand, got it right. Sadly they seem to be very rare as I've yet to see a real one. I've only ever seen humans appropriating their architecture.
i cannot stand the amount that they talk. constant mouth sounds, just to fill the silence. communication is very important but many of them seek to communicate nothing at all.