The ones I've seen don't ask you to identify one single puppy. They ask you to identify all the puppies, making it rather harder to brute force: http://thepcsp

The ones I've seen don't ask you to identify one single puppy. They ask you to identify all the puppies, making it rather harder to brute force: http://thepcspy.com/read/the_cutest_humantest_kittenauth/ http://thepcspy.com/read/the_cutest_humantest_kittenauth/ http://research.microsoft.com/en-us/um/redmond/projects/asirra/ http://research.microsoft.com/en-us/um/redmond/projects/asir...