I don't know about this thing about dogs not ever seeing colour. We had a dog with bright blue eyes and I swear she was not colour blind. She was terrified of the dark, and had different reactions to different colours. Also - I thought common colourblindness was to red and green? I could be wrong.

I think there can be merit to this, and I think some people are phonies, the same with human psychics. But I really do believe in mediums and stuff.. and that there are things that we just can't understand.