Free images results:
 

Scary pictures, stock photos and images

 
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Rhino Royalty Free Stock Photos
Author: Barsik
Lizard Royalty Free Stock Photography
Author: Pilarin
Crocodile Royalty Free Stock Images
Author: Michaf
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Scary tree Royalty Free Stock Images
Author: Kaank
Scary santa Royalty Free Stock Photography
Author: Moori