Just found at the Citizen's Compendium. They should it know. "The world needs a better free encyclopedia."
"With the long-time popularity of the "breed" name cockapoo, used since at least 1970 and constructed by combining elements of its two contributing breeds (Cocker Spaniel/Poodle), it has become extremely common to find mixed-breed dogs named with breed names likewise invented by portmanteau. The tendency for using such names in a jocular way dates back at least to Queen Elizabeth's Dorgis (Dachshund/Corgi). However, extremely few of these become mainstream "breeds" over long periods with determined breeders, and, as of 2006, Cockapoo and Labradoodle are still the only such combined names to make it into the dictionary. Nonetheless, names such as these commonly appear in for-sale ads and often lack consistency; a cross between a Maltese Terrier and a Poodle, for example, may be advertized as either a "Maltipoo" or a "Moodle"."
http://en.citizendium.org/wiki/Mixedbreed_dogAnd if you never saw a Moodle. Here is one:

Found after a search for Moodle + dog at Google.