How come cats have retractable claws and when they knead or unsheathe them how do thet pop them back in? Is it like

Question: How come cats have retractable claws and when they knead or unsheathe them how do thet pop them back in? Is it like moiving our fingers?
- Keywords:
  animal,
  cat,
  claws,
  finger,
  retractable
Asked by mollymac to Christina, Jess, Steve on 26 Jun 2013.
- Christina Pagel answered on 26 Jun 2013:
  
  I don’t know exactly how they do it, but they do it so that the skin covering the claws (when not extended) protects the claws from losing their sharpness!
  I assume they must have little muscels to move their claws since they can move them independently if you watch them groom!

mollymac commented on 26 Jun 2013:

Thanks! Now I know why, whenevr they knead my leg, they’re so sharp! >~< 😉

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- Christina commented on 26 Jun 2013:
  
  I know! it hurts! but it’s so sweet you don’t want to tell them off 🙂
  
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Question: How come cats have retractable claws and when they knead or unsheathe them how do thet pop them back in? Is it like moiving our fingers?