From the description:
The CAT dataset includes 10,000 cat images. For each image, we annotate the head of cat with nine points, two for eyes, one for mouth, and six for ears. The detail configuration of the annotation was shown in Figure 6 of the original paper:
Weiwei Zhang, Jian Sun, and Xiaoou Tang, “Cat Head Detection – How to Effectively Exploit Shape and Texture Features”, Proc. of European Conf. Computer Vision, vol. 4, pp.802-816, 2008.
A more accessible copy: Cat Head Detection – How to Effectively Exploit Shape and Texture Features
Prelude to a cat filter for Twitter feeds? 😉
I first saw this in a tweet by Basile Simon.