Resources for Edward Mordrake
As always, lets start with the wikipedia link. Ashley mentioned Snopes, and in fact it does have a Snopes article. Also this and this mention the fakeness of the mummified heads (pictured below) and finally, for an element of bizarre cuteness, I’ve added a video of Frank and Louie, the Janus cat who lived to be 15 years old.
Resources for Gef the Talking Mongoose