Thanks again for all the fabulous suggestions, ladies There are so many great ideas, but a surprising number of the names you have suggested belong to (human!) family members and friends -- and one of them actually rhymes with my own daughter's name! And then another bunch of names belong to dogs and horses (past and present) of family members or close friends. My English family alone have owned, over the years, a Polly, a Maisie, a Poppy, a Rosie, a Sadie, a Daisy and a Holly. (I have two friends called Holly, too!).
Smittie, the dog will be brown (probably). There are four brown pups in the litter, and one cream one.
Lots of you have suggested Coco, which I think is cute, but the kids really dislike it for some reason.
Jane, Lizzie would totally work for a dog...except Elisabeth is my name. Only a select few are allowed to call me Lizzie, though.
Bethster, Ponyo's a great suggestion, but I've never seen the movie! I'll have to watch it soon. (Nala is also Simba's girlfriend in Disney's Lion King -- it's cute, but works better for a cat).
Isabel, Io is awesome because it's a two-syllable name with only two letters.
Rambling Ann, "Rosanna Arfette" hahahaaaaaaa -- that's as funny as Kermit the Dog.
Sara L, our family is ultimately a monarchy too, for the important stuff. But the dog-naming thing is possibly more important to the kids than it is to us. If only we could get THEM to agree on a name!
SuzyQ2, can't use Cory because it belongs to a human family member.
deb -- Rogue is super cute and not used by someone I know! I'm adding it to my list.