Australian cartoonists find the Messmer claim not credible. Messmer came forward decades after Pat Sullivan's death, claimed Felix was his creation and placed the place of creation of the lucrative character in his own house, away from his boss's office. He excluded Pat Sullivan completely, and yet the lettering throughout the creation matches Pat Sullivan's hand. It is also telling that a cartoon kitten says "MUM" in "Feline Follies", with the Australian/British spelling, rather than "MOM", the American spelling; Messmer is less likely to have written that.