About 15 years ago, I had a similar experience with my Dalmatian Dylan who passed on at age 13. On the first anniversary of his death I was thinking about him before I went to bed.
That night while sleeping, I suddenly found myself walking on a trail in the woods. It was surreal in that I knew I was in a dream and I knew I was there to meet Dylan. The woods were beautiful, the ground was wet and the sun was just coming up and there was a faint fog rising up from the ground. As I walked, I saw Dylan in the distance. The sun was shining on his white coat it was such a beautiful sight. When he saw me, he immediately came joyfully running to me. Just as he got to me, I reached down to embrace him but I suddenly woke up just before I could touch him. I honestly believe that what I experienced was not a normal dream and was indeed my dog communicating to me that he was okay.
Yes!!!!! The details you described were very similar to what I saw. I have never had a dream like that filled with such detail and the dream went on for such a long time. I can’t tell you how profound my dream was and the amazing thing was that I didn’t mourn him anymore after that encounter whereas before that, I had this heartbreak I carried that filled me with such pain. It was truly a gift and I know in my heart that my dog, Jordan, is waiting for me in heaven.