A muscular contortion of the face is the universal signal for pleasure and happiness. When was this set in stone, and why wasn’t it the 
instead of the 
? Showing one’s teeth would seen aggrresive from an animal standpoint.
See this thread:
A muscular contortion of the face is the universal signal for pleasure and happiness. When was this set in stone, and why wasn’t it the instead of the ? Showing one’s teeth would seen aggrresive from an animal standpoint.
See this thread: