Can all mammals breathe through their nose and mouth?

Question

Can all mammals breathe through their nose and mouth?

Answer 1

No. Horses cannot breathe through their mouths.  They also cannot vomit.

Answer 2

yes

Answer 3

Yes.  This is made possible by a thing called an ossified palate.  That's bone forming the roof of your mouth.  This means you don't have to decide between breathing or swallowing food.  That bony separation allows you to do both at the same time.  Most non-mammals can't.  Some, crocodiles and birds, can as they also have an ossified palate.

Answer 4

No. Cetaceans (whales and porpoises) can only breathe through the blowhole on the top of the head.

Answer 5

The newborn infant can only breathe through the nose (newborns are "obligate nose breathers").

and check the link beneath for confirmation of source

http://en.wikipedia.org/wiki/Nasal_conge...

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Answer 6

Everyone so far is correct, except that cachalot whales (the ones with teeth instead of baleen plates like orcas and all dolphins) have only one nostril, whereas all other mammals have two. These can only breathe in through the mouth, and out through the "blow-hole" or nostril. Baleen whales, like the bowhead and right whales can breathe in or out of either mouth or nostril. Also some small burrowing mammals like shrews and moles get so used to not being able to open their mouthes underground to breathe that they only ever breathe through their nostrils, although they are still able to.