I saw this on Facebook last night. I can't honestly say why this makes me laugh when I watch it, but it does. The video was first posted to YouTube on May 1st; is has since logged over 28 million views. Apparently, I'm not alone!
Then I spotted this other video. It seems the Canadians have their own greeting beavers:
There's plenty more featured at the Talking Animals channel on YouTube. Have fun!