They would die.
they are carnivores so they get food by killing other mammals and oxygen by inhaling with there lungs
I THINK THAT A monotremes is the answer.
For food and, like all mammals, for the oxygen they produce world wide.
All mammals obtain their oxygen from the air.
Placental mammals respirate using the umbilical cord. The cord, which is attached to both baby and mother, delivers food and oxygen to the baby.
No. Bats don't produce oxygen. Bats are mammals and mammals need to oxygen to survive.
...From the air. They're mammals, they get their oxygen the same way as all other mammals.
Mammals need oxygen to breathe. Oxygen is a gas that is in the air. Without oxygen, mammals cannot live long.
Their lungs process oxygen.
Chimpanzees get oxygen through there lugs and they breath through there nose and mouth. They are mammals and mammals have lungs.
Mammals have blue blood (lack of oxygen), but when exposed to oxygen, it turns red Hope this helped! :)
Blood transports oxygen nutrients and wastes in mammals and fish .