Kristin Bell attends the launch of Friendfactor at Lavo in...

Kristin Bell attends the launch of Friendfactor at Lavo in Manhattan. (May 3, 2011) Credit: Getty Images

One thing you may not have known about Kristen Bell: She loves sloths.

In fact, the actress told Ellen DeGeneres, on an episode of "Ellen" that aired Tuesday, she loves the little creatures so much when her boyfriend, Dax Shepard of "Parenthood," arranged to have one come over for her birthday party, she launched into a full fledged panic attack. 

Don't believe it? See the video below of Bell, 31, crying, curled up on her bed while she talks about her excitement:

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