Mr Red, You're right about "joyeux," of course. I wasn't sure about the grammatical details of whether the final "x" always makes the noun or adjective plural (a long time since "j'ai étudiez le Français"); it just didn't look right without the "x" though. (J'ai oubliez beaucoup de la grammaire Français, parce que je n'ai pas l'opportunite parlez la linge souvent.)
The "Fleas Navidog" is, of course, a pun on "Felice Navidad." The Iditerod is an Alaskan dog sled race.
Genie