90-pound dog chatters teeth in fear upon meeting kitten (VIDEO)

Sadie is a 90-pound Labrador who could theoretically strike fear into the hearts of would-be criminals. Well, so long as it’s not a cat burglar. That’s because the 7-year-old dog appeared terrified when meeting her owner’s new kitten, even chattering her teeth in a video that has gone viral.

“She’s not sure about this,” Sadie’s owner, Tom Frost, says in the video. “She’s afraid to even look at her.”

The video has been clicked on more than 400,000 times since it was first posted. In the 6-minute clip, Sadie seems genuinely perplexed, and more than a little nervous, about how she should behave around her new feline companion.

“Her teeth are chattering,” he continues. “It’s sort of like Velcro.”

The kitten, for its part, seems largely uninterested. She does casually wave a paw at Sadie’s nose, triggering the dog’s chattering teeth.

Frost writes on his YouTube page that since the initial fear-inducing incident, the dog and cat now get along “very well.”