Saturday, October 30, 2010

The Wet-Dog Shake: How wet mammals dry themselves


The drying of wet fur is a critical to mammalian heat regulation. This fluid dynamics video demonstrates how hirsute animals rapidly oscillate their bodies to shed water droplets, nature's analogy to the spin cycle of a washing machine.

High-speed videography and fur-particle tracking is employed to determine the angular position of the animal's shoulder skin as a function of time. X-ray cinematography is used to track the motion of the skeleton. Particular attention is paid to rationalizing the relationship between animal size and oscillation frequency required to self-dry.

http://arxiv.org/abs/1010.3279, ArXiv, 15 Oct 2010

30 comments:

  1. i dry myself like this too.is it weird?

    ReplyDelete
  2. Sweet vid, man. The X Rayed rat is one of the coolest parts.

    ReplyDelete
  3. Interesting video. I love animals :)

    ReplyDelete
  4. We have all seen a dog doing it at least once in our lives and probably tried to replicate it as kids.

    ReplyDelete
  5. I definitely do it when I mob outta the shower, kinda gets water all over the bathroom though... haha

    ReplyDelete
  6. It's kind of cool to just sit back and watch some of the things animals can do. Interesting article Dex, keep em comin.

    ReplyDelete
  7. I cant stand it when my dog gets out of the bathtub and does this. Water everywhere.

    ReplyDelete
  8. never realized they did it it so fast... 27 hz is quite a lot

    ReplyDelete
  9. Too much science. I only watched for the cute liddle animals.

    ReplyDelete
  10. haha oh wow man that was great.

    I'd would never occur to me to study the frequency at which animals shake to dry themselves.

    ReplyDelete
  11. Now I know my dog doesn't just do this to annoy me

    ReplyDelete
  12. I'd like to be able to do that!

    ReplyDelete
  13. cool video, i just thought they wanted to be dry

    ReplyDelete
  14. I was not aware of such complexity to a simple fur drying.

    ReplyDelete
  15. nice video , i learned a lot from your blog :)

    ReplyDelete
  16. Hah, cool video and explanation, wish an actual science class was this interesting. Very neat.

    ReplyDelete
  17. I wonder what it would look like when humans could do this.

    ReplyDelete
  18. I do love some oscillation frequencies before bed

    ReplyDelete
  19. wow thats quite a bit of work on that vid. thanks for sharing

    ReplyDelete
  20. I wish I had a pet that did this but my cats just wipe themselves on my leg to get dry, its nice to read this sort of thing.

    ReplyDelete