This data set contains 3.7M camera trap images from five locations across the United States, with species-level labels for 28 species. More information about this data set is available in the associated manuscript: Tabak, M. A., Norouzzadeh, M. S., Wolfson, D. W., Sweeney, S. J., VerCauteren, K. C., Snow, N. P., … & Teton, B. (2018). Machine learning to classify animal species in camera trap images: applications in ecology. bioRxiv, 346809.