We'd read that babies can be noisy nose breathers, but I was entirely unprepared for my son's oinks, rasps, huffs, pants, sighs, grunts, snores, hums, coos, squeaks, honks, and slurps. (mommyish.com)
If it sounds like your baby has a cold, it's probably because babies are natural nose breathers. (babycenter.com)
For one, many animals used in such research are «obligate nose breathers.» (pnnl.gov)