There are a fair few, but here are the ones that have been found:
Dusky Dolphin.
Examples of nouns beginning with D are:daisydamagedangerdelightDenmarkdevildictionarydimedinnerdogdolphindoordoughnutdraindrawerdungeonduodutydyedynesty
Devon Rex
Some three letter words beginning with D are:diddogdoediedendindabduodotdigdrydye
It breeds in water :D
Some four syllable words beginning with 'D' are:DictionaryDesolationDissertationDirectoryDandelionDelectableSome five syllable words beginning with 'D' are:DeterminationDiagonallyDifferentiateDecontaminate
dumbreed
Doctor
Dogs, perhaps?
hi there i am just asking about dolphins what breeds is there
Some guy from mars, who brought a chocolate cow to earth. Who squezzed and pulled on the cow's doodoo =D
divided