One of my repeated nightmares is that I am somewhere in public with our cat Camilla in my arms, no bag or carrier, and I have to try to get her home on trains, planes, etc. while she squirms and tries to get away. (She's terrified around strangers.) Today, @mxtiffanyleigh had the Camilla-in-arms dream! So now we have proof that nightmares are contagious.