I understand what you mean. It used to happen to me all of the time when Banshee died. When I felt sad some nights before bed, I sometimes dreamt of Banshee. I had alot of dreams about her right after she died. I also had a dream with Banshee and my cat that died being ghosts in my dream, and they were both dead at the time. Banshee seemed very happy in these dreams, though I forgot just about all of them, all I remember is that Banshee was jumping around looking young and I was happy.. then I'd wake up and remember that shes dead.. These dreams are only the pet's way of telling you that its okay, they are fine, no need to worry, even though you can never forget them.. they are just telling you that you don't have to cry for them so much, even though you can't stop crying.
Also I used to even hear Banshee when she was dead, sometimes I'd just sit and do nothing then all of the sudden I hear Banshee in the garage coughing(she aways coughed when she was old..), the night she died I heard her, and I felt a bit happier..
Heres some pictures: http://baltosource.timduru.org/img/user ... C00133.JPGhttp://baltosource.timduru.org/img/user ... C00194.JPGhttp://baltosource.timduru.org/img/user ... C00039.JPGHeres Banshee's tribute video: http://www.youtube.com/watch?v=sTOwfc4MmEM She was sure a pretty dog..