TIL rodents are physically incapable of vomiting. User splashley_, in the Today I Learned (TIL) subreddit, 02 Dec 2015
Why Can’t Rodents Vomit? A Comparative Behavioral, Anatomical, and Physiological Study User pavel_lishin, in the Reddit Science subreddit, 10 Mar 2015
TIL Rodents are incapable of vomiting. User BlackmanLewis, in the Today I Learned (TIL) subreddit, 02 Jul 2013
New study discovers why rodents, peculiarly, can't vomit: An absent brainstem neurological component is the most likely cause. User DarwinDanger, in the Reddit Science subreddit, 16 Apr 2013