About Dog-Headed People:

http://www.geocities.com/pilotwolf143/cynocephali.htm

http://en.wikipedia.org/wiki/Saint_Christopher

http://www.beyond-the-pale.co.uk/dogsaints.htm

this link is fascinating, long read , but good.(above)

http://res.oxfordjournals.org/cgi/content/abstract/57/228/1