This is cute, I like the concept, it's a bit cliched, but the way you phrased it and making it a dog made it different. I also like your descriptions of him, they were cute. And the joke at the end.

One thing, you switch into present tense in the following spots, when the rest is past. You might wanna work on that:

"Of course, a face like his is one that only a mother could adore."

"He absolutely loves to play with"

"But, don't ever ring the doorbell too much... he likes to bark up a storm at those..."

And the last line.

Other than that cute piece!

PS If you're bored this weekend check out the Review Game's Review Marathon (link in my profile)