Thanks everyone! I use a Canon EOS 30D.
I don't know what breed Seamus is, as he was rescued (he was originally a stray.) We think Papillon/Pomeranian, the shelter guessed Sheltie/Pomeranian. We could be totally off, though.
Some guesses we've heard so far:
-Papillon
-Pomeranian
-Sheltie
-Tibetan Spaniel
-Long-haired Chihuahua
-Border Collie
-Cavalier King Charles Spaniel
So yup, we've heard it all! Your guess is as good as mine.
What do you guys think?