The Collaborative International Dictionary of English v.0.48:

pooch \pooch\ v. i.
   To round one's lips as if intending to kiss.

   Syn: pooch out.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

pooch \pooch\ n.
   A dog. [informal]
   [PJC]

WordNet (r) 3.0 (2006):

pooch
    n 1: informal terms for dogs [syn: pooch, doggie, doggy,
         barker, bow-wow]
    v 1: round one's lips as if intending to kiss [syn: pooch,
         pooch out]

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "pooch":
   Seeing Eye dog, bandog, bitch, bowwow, canine, dog, fancy dog,
   guide dog, gyp, hound, kennel, lap dog, pack of dogs, pup, puppy,
   sheep dog, show dog, sled dog, slut, toy dog, tyke, watchdog,
   whelp, working dog