First-creature narration in Kafka

Clearly Frank Kafka was experimenting with a new form, for him, in the two long and uncompleted stories near the end of the Modern Library "Selected Stories" : Investigations of a Dog and The Burrow. Both are first-person narratives, although the correct term might be "first-creature" narratives, the first obviously narrated by a dog and The Burrow by some sort of underground creature, probably a mole, although with odd human attributes, at least in this translation: has hair, and a beard, for example. The influence if any might be Dostoyevsky's Underground Man, the solitary outsider examining and questioning every facet of society - in The Burrow, this motif becomes quite literal. The strength of The Burrow, like Investigations, is how it makes us think, through examination of the consciousness of another, about our own consciousness, in a new way: the narrator of the Burrow has built himself an underground protective fortress, though he constantly worries about larger creatures that can devour him without warning, but he blithely consumes small mice and other rodents, without a thought as to how their existence is subject to his - on a literal level a shot at our human capacity to own pets and consume meat for dinner, holding conflicting views in our minds at the same time; on a deeper level, it's also about our position in the cosmology, subject to the whims of an unseen god and exerting godlike powers over our world. Also perhaps a political allegory of class power and oppression. The weakness of the story is that it goes on at great length without moving the narrative forward - Kafka apparently trying to develop this into a first-person novel but probably realizing he could not sustain the material, the voice, and the interest at that length and abandoning the project - just my own speculation here.