Who wrote the poem "What name could better explode from a sleeping pup but
this? Leaping to his feet. Stormy!" [ not 100% sure of format,
capitalization, punctuation ]

Hello music_jp,

The poet is William Carlos Williams, and the poem is called "Stormy". 
If you are registered with Amazon.com, you can read it by searching
for "what name could better explode" in the following book:

"Bestiary: An Anthology of Poems About Animals" [the poem is on page 106]
Amazon.com
http://www.amazon.com/exec/obidos/tg/detail/-/188331948X/qid=1069796842/sr=1-1/ref=sr_1_1/002-5696430-8592032?v=glance&s=books

Due to copyright concerns, I don't believe that I can reprint the text
here.  If you search for the poem on Amazon, you will see that there
are some format, capitalization, and punctuation differences, plus two
more "Stormy!"s.

- justaskscott


Searched on Amazon.com for:

"what name could better explode"