It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
This image was acquired from
Keywords from Image Description:
Siberian Tiger Cub . One of the two cubs at the zoo in Duisburg Germany Siberian Tiger Cub Mathias Appel cczero Mathias Appel cczero Panthera tigris altaica
Page 2017 Free-images.com. All images are Public Domain