a toad is not a frog(???)....and a milk is not a kingsnake...the post two lines above mine here probably explained it best.despite the fact there are several subspecies of kings,and even several different species of kings,but only one species of milk,a milk is a milksnake in it's own right,just as much as a king is a kingsnake...to say it's related to a king is accurate,but technically,to say it's even 'a type of king' is incorrect.