The fact is dogs are good for your heart and your stress level. If you have love to give, think about sharing your home with a furry friend. He will return your affection in many multiples over the coming years.
On another note, I've had a bit of interest from cancer patients in finding online discussion forums. For those of you who seek a support group online, discussion forums for cancer patients and survivors is thought to be highly therapeutic. Here's one I found through Twitter that appears to be quite brisk with ideas on alternative medicine, while combined with traditional medicine: Surviving Cancer.