The dog doesn't LOOK freaked out - in fact she looks like she's been taking her ease there for some time and has no intention of going anywhere . . . < g >
Y'all may have a career in animal photography if you want to take it on . . . we used to specialize in cats. There is no way to make a cat do something it doesn't want to do. You have to make them want to (usually involves chicken livers).
OK - much as I love it when you are impressed, the time has come to admit we had to cheat the dog in.... we couldn't get her to stay there under the pony, so we pasted her in from this out-take. She was really ~present~ today, if that counts! 
I do love Bay though.... he'll just stand there, ears forward, same every time. He's a easy horse to photograph.