Kristen Bell breaks down in tears at 31st birthday sloth gift - video

Kristen Bell has revealed that she cried when she found out her fiancé Dax Shepard was getting her a sloth for her birthday.

The voice behind Gossip Girl revealed how much she loves the animals on The Ellen DeGeneres Show today (January 31), confessing that she had a meltdown when one was presented to her.

Bell told Ellen DeGeneres that she began to weep even before she came into contact with the creature.

"I've been obsessed with sloths for as long as I can remember. They must be my spirit animal or something," she said.

"There's nothing cuter than a baby sloth... OK, maybe a slow Loris. Maybe. On a good day."

The House of Lies star even appeared to get emotional as she retold the story and home video footage played on a large screen.

"The day of my birthday, we're sitting in the living room and I hear a knock at the door," she explained. "[Dax] says, 'Your present is here. Why don't you go grab the dogs and go in the back room?'

"I had no context for knowing what it was, but I grabbed the dogs and walk into the back room of the house and I was immediately overcome and I thought, 'There's a sloth near. There's a sloth here; it's close; it's going to happen'."

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Watch Kristen Bell on The Ellen DeGeneres Show: