I'm so glad he's got a playmate, and 'new toy' all in one!! Bailey, my mini-aussie, took over the role of 'momma dog' to my WGSD when I first brought her home. He'd clean her face, clean out her ears .. or if if she was sick or injured (she had beaucoup health problems), he'd turn in to Nurse Bailey. He supervised her out in the yard, ran interference and correct her if she was too rough with the cat ... I'd basically given HIM a puppy.
It was 'the best toy ever' because he's not particularly interested in toys or bones ...
So yeah, Tanner probably DOES think that Addie is 'his'! :wub: