Yeah, Robin - I was skeptical too - till Cody sent me a sign I couldn't miss.
My friend Vicki's grey had passed about a year before Cody, then Cody in Jan of '05. I went down to FL to visit Vicki & family in the spring of '06 and I knew they were doing a grey event in Tampa (can't remember the name of it but there were vendors, etc, at a hotel not far from the airport). We were talking about the dogs (of course). We went in the the event & looked around a bit, then when we left, we were driving down the street the hotel was on & saw this humongous double rainbow!! So we both figured that Cleo & Cody were together & sent us both our sign at the same time. Very weird...