Looks like the dog grabbed the guy's headset to try to steady himself.

I have flown dogs and cats. No problems, but no zero G's.
http://pad39a.com/gene/mikey.html
http://pad39a.com/gene/cat.html
--
Gene Seibel
Gene & Sue's Aeroplanes - http://pad39a.com/gene/planes.html
Because I fly, I envy no one.