Crocodilians use tools for hunting (x-post: /r/biology) User islamicporkchop, in the Reddit Science subreddit, 20 Mar 2016
TIL that alligators in Louisiana have learned to balance sticks on their snouts specifically during egret and heron nesting season, when the birds are actively searching for nest materials. This is the first known case of predators using lures based on seasonal prey behavior. User DoctorFredbear, in the Today I Learned (TIL) subreddit, 09 Dec 2015
Crocodilians use tools for hunting User aha-a-yellow, in the More interesting stuff subreddit, 07 Jul 2015