UPDATE: 

He's proving to be very well-behaved and friendly. Buster has adjusted beautifully to my house, following me everywhere and always staying close by my feet. He is house-trained with no accidents, behaves excellent with other dogs and people, and even has a calming influence on the neighbor's constantly barking dog.

When I'm away, I use a Furbo dog camera to monitor him, and he does seem anxious, often barking and howling for a while after I leave.

Hi everyone, my name is Buster and I am very new to Rescue.  My owners passed away and me and brother were taken to a shelter in North Texas.  I thought we would stay together but another Rescue group came in and took my brother and left me because they said I was Dachshund Mix.  I was so very sad to be left behind but more so to be taken from my brother.  But here I am and I want to let you know that I am ok and I am now looking for my forever home.  I finishing up with all my vetting and then I am ready to go.  If you think I would fit into your family, please complete an application at www.ctdr.org.