Nellie the Sea Otter Shows Off By Stacking Cups [VIDEO]

Meet Nellie, the Sea Otter. She's a clever animal with an impressive trick.

Nellie is a very well trained otter who lives at Point Defiance Zoo & Aquarium in Tacoma, Washington. She is quickly becoming a YouTube viral sensation with her impressive skill of cup stacking.

The video is proof of her cleverness! There is one pretty amusing part in the video where her trainer stacks them out of order and hands them to Nellie. She sees what the trainer has done and looks up at her as if she's saying, "Really? Did you really just do that?"

Watch Nellie the Sea Otter dazzle you with her cuteness and her brains!