I am a bona fide mutt
My dad is 100% Polish. Explains my stubborn streak
My mom is part Scottish (Clan MacLeod), part Irish, part English, part Portuguese, part Indian (i.e. from India).
My husband's "pedigree" is similarly muttlike - Russian, Austrian/German, and a few things I don't remember.
Mutts are supposed to be the healthiest, though - all those inbred recessive genetic diseases don't take hold - if anything, you're a carrier, but not affected yourself. So, no complaints here.