Not mentioned in the Wikipedia article, but in a referenced article [2]: "Another puzzling phenomenon is that some male animals, men included, yawn in association with penile erection"
Read about it, mammals will yawn when other non-mammals yawn.
if a see a snake (yawning or otherwise) i'll definitely not yawn.
puking, screaming or running would be more likely.
IIRC, it wasn't that contagious.
Or, restated, they confirmed it was contagious.
Also, primates are naturally selected to act mutually. Whoever didn't do so lost the tribe and died.
That's just high me thinking though.
Occam’s razor.
seanalltogether•5h ago
thevinchi•5h ago
Findecanor•1h ago
airstrike•4h ago
froddd•3h ago
kgwgk•2h ago
thih9•2h ago
https://www.youtube.com/watch?v=joROEZQz178
kgwgk•1h ago
dghughes•3m ago