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Source video:
   • Video  

Rex in the thumbnail
By J.M. Luijt (Own work) [CC BY-SA 2.5 nl (https://creativecommons.org/licenses/...)], via Wikimedia Commons

Rhino photo (CC 2.0 Alastair Rae):
https://en.wikipedia.org/wiki/Black_r...

Tiger photo (CC 2.0, Derrick Brutel):
https://en.wikipedia.org/wiki/File:An...

Aye aye photo (Tom Junek, CC 3.0):
https://commons.wikimedia.org/wiki/Fi...

Gorilla photo (Tereza Mrhálková, CC 3.0):
https://en.wikipedia.org/wiki/Western...

Panda photo (J. Patrick Fischer, CC. 3.0):
https://en.wikipedia.org/wiki/Giant_p...

Snow Leopard photo (Greg Hume, CC 4.0):
https://en.wikipedia.org/wiki/Snow_le...

Dubstep outro (Creative Commons):
   • TIK TOK [ FREE USE ] - [ Dubstep FREE...