(See previous post for background.)
I have come across a couple postings from the owner of the facility the dogs were allegedly stolen from and they appear to be current. In short, the owner maintains the dogs were stolen but the stabbing did not take place and the robbery was not witnessed. If interested, read for yourself here and here. The first link also contains a slideshow of the dogs.
Added: A few more details on the case from a local TN paper.