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The field of object recognition in natural images has made tremendous progress over the last decade. For specific object classes, in particular faces, pedestrians, and vehicles, reliable and efficient detectors are available, based on the combination of powerful low-level features with modern machine learning techniques. However, in order to achieve good classification accuracy, these systems require a lot of manually labeled training data, typically several thousand example images for each class to be learned.

While building recognition systems this way is feasible for categories of large common or commercial interest, one cannot expect it to solve object recognition for all natural categories. Humans usually observe and classify objects from a list of high-level semantically meaningful properties that we call attributes. Attributes are typically nameless properties, e.g. the color of an object, or the presence or absence of a certain body part. To better understand the complexities of natural ecosystems and better manage and better protect them, it would be helpful if we can differentiate the animals based upon their attributes and characteristics.

In this dataset, we provide 18000 images of 50 animal classes with pre-extracted feature representation for each image. In the next 60 days, we challenge you to build prediction models that can identify all the attributes associated with each animal.

Why should you participate?

  • To learn and use the latest open-source libraries and packages
  • To learn by working on live problems because it excites you more than learning from books and tutorials!
  • To build your fan following in our community
  • Of course, grab cash prizes

Who should participate?

  • Working professionals
  • Data Science/Machine Learning enthusiasts
  • College students (if you understand basics of predictive modelling)



  • In order to be able to claim your prizes, your HackerEarth profile must be more than 50% complete.
  • The prizes will be disbursed before the end of December.



There are great prizes to be won

1st Prize

USD 700 

2nd Prize

USD 500 


  1. When the contest is running, your output will be evaluated only for 40% of the test data. After the contest is over, your output for the remaining 60% of the test data w...


Sample challenge

1. Can I participate in a sample challenge?

Yes, we recommend that you participate in our sample challenge.This challenge enables you to understand how to ...

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