Efficient little red squirrels..
This is not the National Geographic article, but very interesting and cute none-the-less!
Jumbo romance | World news | guardian.co.uk
One of my own little clever animals surprised me this past weekend. I took Anka my vasa parrot to my parents'. She was staying in her travel cage in the basement (my old bedroom) and I had gone upstairs to shower. About 5 minutes later, My dad is yelling, "BROCK! Come here! Anka is out!" So I go to find that Anka has unlocked her cage door, climbed up the basement stairs, and is patiently sitting at the top waiting for me
