Is it possible for players to tell if another party member has made a death saving throw?

@ChrisPerkinsDnD Without meta-gaming, is it possible for players to tell if another party member has made a death saving throw?

— Michael Bennett (@MikeEvenify) September 22, 2016

Not exactly, but they might be able to tell that the character is dying (i.e., getting closer to death). #WOTCstaff https://t.co/WytVCE73eR

— (((Chris Perkins))) (@ChrisPerkinsDnD) September 22, 2016