The Buddy Files: The Case of the Lost Boy (Albert Whitman, 2010) by Dori Hillestad Butler is so much fun! I love the voice of the dog. It's a quick read--perfect for the child just starting to read on his own, but entertaining enough for an adult to read aloud. I must read more in the series. (And buy for middle grandson . . . shh, don't tell him!)
King is at the P-O-U-N-D because his people are missing. He's got to get back to his neighborhood to find them. When King gets adopted by a new family, they rename him Buddy. Then, his new boy, Connor, disappears! King/Buddy must solve the case!
After you are entertained with this story, go to Dori's site to see the dog that owns her! You'll also see what other books this award-winning author has written.
P.S. I've also had the privilege of meeting Dori--besides being a good writer, she's a great person too!