How can you add alliteration to the sentence his dog was asleep?

Here are a few ways to add alliteration to the sentence "His dog was asleep":

* "His dozing dog was deeply asleep." (Alliteration on "d" sound)

* "His playful pup was peacefully asleep." (Alliteration on "p" sound)

* "His slumbering spaniel was soundly asleep." (Alliteration on "s" sound)

These options keep the original meaning while adding a touch of literary flair!