Good question. Detecting just one class (in this case, cats) will require negative examples. Finding good negatives is somewhat of challenging task because they

Good question. Detecting just one class (in this case, cats) will require negative examples. Finding good negatives is somewhat of challenging task because they should be pretty comprehensive, but if you create an account on image-net (http://image-net.org/ http://image-net.org/), then you can download thousands of images. Any questions, feel free to pm me.