The Animal (n.) is 'poor in world': It has a world in the mode of being deprived of one. This stands in contrast to human dasein which has a world and a stone which has none.
The Animal (n.) is 'poor in world' insofar as it is unable to partake in a life defined by mortality, the ability to die. Stones, incidentally, are altogether worldless.
The Animal (n.) is wholly different from man, who is made what he is not by his intrinsic features but by his relation to being and truth.
The Animal (n.) is unable to perceive because it is unable to relate to beings as such or to beings as a whole. The animal cannot see 'something as something'.
The Animal (n.) is wholly captivated by the world while human comportment is characterized by action.
The Animal (n.) is not world-forming. It is unable to see beings as beings, while humans are not just captivated by the world, but comport themselves toward it.
The Animal (n.) is fully enthralled in the world, bound to their environment; because it has not as-structure; it can never ‘let-entities be’, it can never transcend its world.
The Animal (n.) is in a relation to its surrounding of ‘captivation’, a term that also characterizes Dasein fully in the grip of its concerns.
The Animal (n.) is not able to see because it has eyes but rather that it has eyes because it can see. That is, an organism has organs because it has certain facilities, rooted in drives and urges, through which the organism—as long as it is uncurbed, uninhibited—advances and regulates itself of itself, opening up its surroundings in the process.