Went to the Greyhound Trust monthly walk today (in the pissing rain!).
Jimmy approached another dog called Frank, had a big sniff, and they walked side by side for 2 hours.
Later found out from the kennel managers that Jimmy hated Frank when they were in the kennels together and always had to be separated for walks, etc.
But today it was like they were pure besties, and it was so sweet. The kennel managers were amazed at the change!