How do dogs breath so easily when under all the covers all night?

Do they need less oxygen than people? I'm always afraid my dog will suffocate when she sleeps under the covers at the foot of my bed.

    How do dogs breath so easily when under all the covers all night?

    Do they need less oxygen than people? I'm always afraid my dog will suffocate when she sleeps under the covers at the foot of my bed....
    General Dog Discussions : How do dogs breath so easily when under all the covers all night?...

    • How do dogs breath so easily when under all the covers all night?

      How do dogs breath so easily when under all the covers all night? General Dog Discussions
      Do they need less oxygen than people? I'm always afraid my dog will suffocate when she sleeps under the covers at the foot of my bed.

      How do dogs breath so easily when under all the covers all night?

      How do dogs breath so easily when under all the covers all night? General Dog Discussions
    • my dogs can only stay under the covers for about an hour and then they start panting. the only time they stay under the covers for more than that is if it is realy cold in the room. i know people who can have their faces covered the whole night