Can a Dementor kiss a muggle (or squib)?

Question

I've searched both google and the site but looks like this hasn't been asked yet.

The closest Dementors have come to attacking a muggle is the attack on Harry and Dudley in the beginning of OotP.

Dementors seem to attack both Harry and Dudley, but I'm not sure the soul sucking of muggles has ever been mentioned.

Muggles can definitely sense them even though they can't see Dementors.

Could a Dementor suck the soul out of a muggle (and/or a squib)? What would the result look like to muggles? After an Avada Kedavra the muggles can at least tell the victim is dead. What would a soul-sucked muggle look like to other muggles?

Answer 1

Yes, they can.

In Book 5, stray Dementors

Sent by Dolores Umbridge

attempted to kiss not only Harry, but Dudley Dursley as well.

_{From Chapter 1, Dudley Demented}

He had run barely a dozen steps when he reached them: Dudley was curled on the ground, his arms clamped over his face; a second dementor was crouching low over him, gripping his wrists in its slimy hands, prizing them slowly, almost lovingly apart, lowering its hooded head toward Dudley’s face as though about to kiss him. ...

Concerning the second part of the question:

As there is no case of a Muggle being kissed by a Dementor, we can only speculate. As all human beings, wizard and muggle alike, have a soul in H.P., most likely, they will enter a coma-like state. Will they die? Possibly.

So, in addition to dead people with no obvious cause of death (A.K.), muggle will observe comatose people with no obvious cause, or disease.