I remembered hearing about this, but hadn't seen it in action before. I wish this worked on kids as well. From what I remember, it has something to do with cats grabbing behind the neck of kittens to carry them around, but since I'm not a veterinarian I can't say for sure, but it sure looks cool.

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Not sure if it's 'acceptable' to do this, but since it appears like it's in a vet's clinic, I don't feel to bad about it.