Video! Kristen Bell Dissolves into Tears over a Sloth

"House of Lies" star Kristen Bell loves sloths, like, really loves them.

While making an appearance on "The Ellen DeGeneres Show," the actress detailed what happened when fiancé Dax Shepard presented her with the ultimate surprise: playtime with her favorite animal.

Watch Bell completely lose it!

Tune in to watch the full interview Tuesday on "Ellen"!