They ARE mammals because they give birth to live offspring which are suckled on their mothers' milk. Marsupials is an order of Mammalia just the same as ungulates is an order that includes horses and giraffes, and primates is an order that includes chimpanzees and humans. Don't ask me about monotremes (platypus & echidna) which lay eggs and therefore don't strictly qualify as mammals under the live birth rule. I've seen them called 'proto-mammals' among other things, their definition is constantly evolving.
BTW are American opossums marsupials? The possums of Oceania definitely are. regards, Anthony Farr ----- Original Message ----- From: "Bill Owens" <[EMAIL PROTECTED]> > But kangaroos and opossums are not mammals, but marsupials :-) > > Bill >
