I wonder if the people don't want their dog back.

[hobbit709]

I left two messages at each of the contact numbers on the info on the chip. My vet left two messages at each of those numbers.
No return calls or anything. I did notice that the voicemail answering message on the one number had changed so someone obviously has been on that phone.

http://www.democraticunderground.com/116118483

[ginnyinWI]

1. Probably don't.

If it were me, my answering message would be to say something specifically about the missing pet! I'd be listening to each and every message.

[Curmudgeoness]

2. That is so strange, and sad.

I can't imagine anyone chipping their pet if they would not want it back.

Well, you may have a new doggie!

[shenmue]

3. Poor critter

[marzipanni]

4. Darn, there's a lost Basenji mix on Craigslist Austin,

but she doesn't have a white stripe on her nose. Maybe she's your foundling's sister.

http://austin.craigslist.org/laf/4676610603.html

[newfie11]

5. Maybe the owners moved and didn't update chip info

Have you tried calling vets in the area to see if this sounds like a patient of theirs?

Reminds me I need to update chip info on our guys.

Hope you find her home and thanks for taking care of her. She's very lucky.

[hobbit709]

6. Contact phone numbers work and names given match registry.

I googled the name and it matches the info.

[marzipanni]

7. I know of a few dogs who have escaped while dogsitter was coming to dog's house

while owner was away on a trip. Also, agile dogs sometimes escape a boarding kennel.
Just trying to think of reasons you aren't getting a response.