The next time you download a file from RapidShare, you may be asked to solve a tough CAPTCHA image.

rapidshare-captcha-cats 

Each of the letters in the RapidShare CAPTCHA include a sketch of a cat or a dog and you need to figure out the letters that just have a cat image.

It may be hard for spammers to break this complex CAPTCHA but even human beings will have a real tough time deciphering such images.

Related: CAPTCHA That May Be Very Hard to Break

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