1. World Wide Fund. https://www.worldwildlife.org/species/tiger
2. World tiger population. https://tigerpopulation.weebly.com/background.html
3. Thangarasu, R., Kaliappan, V.K., Surendran, R., Sellamuthu, K., Palanisamy, J.: Recognition of animal species on camera trap images using machine learning and deep learning models. Int. J. Sci. Technol. Res. 8(10), 2613–2622 (2019)
4. Chen, G., Han, T.X., He, Z., Kays, R., Forrester, T.: Deep convolutional neural network based species recognition for wild animal monitoring. In: 2014 IEEE International Conference on Image Processing (ICIP), pp. 858–862 (2014)
5. Norouzzadeh, M.S., Nguyen, A., Kosmala, M., Swanson, A., Packer, C., Clune, J.: Automatically identifying wild animals in camera trap images with deep learning. ArXiv, abs/1703.05830 (2017)