"The increasing level of vocalization and showing of teeth shows that he is extremely stressed, yet is holding back with a huge amount of control. When she releases, he licks - doggie for 'Thanks, please don't do that again!' - and then shows the discomfort as soon as she leans in again."
"Thank goodness for really well-temperamented dogs like this."
Sadly, if that's not a "happy growl" and the dog's patience should happen to run out, it won't just be the little girl facing an entirely avoidable injury. Parents frequently have to make the heartbreaking decision to put down their dogs after they bite.
"If, or when, this terrific dog loses it, the child will be the victim and everyone will run around wondering what went wrong," Crosby says.
Jen Deane, who runs the animal welfare group Pit Sisters, told The Dodo the video made her "cringe," but ultimately, this is a lesson in parenting.
"Videos like this should be a lesson in what not to do in allowing a child and a dog to interact," she says.