The astronauts breath as they have an oxygen tank which they keep attached with their space suit.
Mammals, birds and reptiles all have lungs. The particulars differ just a bit by group, but the essentials remain common to all. A diaphragm expands the cavity in which the lungs are situated, and the reduced pressure inside causes outside pressure to force air into the lungs. The lung cavity (or chest cavity in some animals) gets smaller when the diaphragm relaxes, and air is forced out. A link is provided below.
They use their lungs to breathe.
Yes
with there lungs.
how do birds breathe
All insects have spiracles. This is how they breathe because they do not have lungs like vertebrates do!
Penguins, like all vertebrates, have lungs. They take a breath in, and then exhale.
All mammals breathe with lungs.
That's right, cats breathe with their lungs, just as people do. All mammals use lungs to breathe.
Tarsiers are like all other vertebrates: they breathe oxygen.
Humans fit is description.
Yes. All dolphins breathe through lungs
All mammals can breathe with lungs.
All mammals Breathe with lungs, for a start.
All mammals have lungs with which to breathe.