Why I love Emily Dickinson's "A Narrow Fellow"

I love the poem "A Narrow Fellow in the Grass" by Emily Dickinson.  Published in the newspaper The Daily Republican in 1866, it was one of the few poems published during the poet's lifetime.  It's a fantastic poem in its childlike simplicity, but also in its sophistication.  The language she uses is evocative and descriptive enough that she never has to name the thing she writes about; yet her word choice is unique. For example, in the very first line of the poem, she describes the snake as a "narrow fellow".  "Fellow" is usually used in reference to humans, so applying it to a snake gives it a human quality.  "Narrow" is an accurate description of a snake, though usually snakes are described as "long" rather than "narrow."  The combination of "narrow" with "fellow" gives us a sense of familiarity and fondness for the snake.
Later, she uses assonance to great effect in the lines "He likes a boggy acre, / A floor too cool for corn."   The assonance begins in the first of the two lines with "boggy" and continues with "floor," "for," and "corn." The longer assonance is interrupted by the smaller assonance of "too" and "cool."  Also in those two lines, Dickinson uses alliteration with "floor/for" and "cool/corn."  She uses assonance and alliteration in other places in the poem, but this is the best example.
The very last two lines of the poem are also fantastic in their description of fright.  The first, "without a tighter breathing", is more standard, but the last, "and zero at the bone" is such a cool way of saying "chilled to the bone."
Dickinson uses an interesting rhyme scheme. The first and third lines of each stanza do not rhyme, even by the most slanted slant rhyme, but the second and fourth do.  Sometimes the rhymes are perfect, for example "me/cordiality" and "corn/morn", but other times the rhymes are quite slanted, as in "seen/on" and "rides/is".  I love this because it doesn't come across as trying too hard to make the poem FIT TO A RHYME SCHEME OMG.  Metrically, the poem alternates between iambic tetrameter and iambic trimeter, which leaves an interesting space after each second and fourth line.
Besides the poetic diction and literary devices, this poem just makes me squee.