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The narwhal made an unexpected appearance based solely on this video. Don't watch this video more than once, otherwise the song will be stuck in your head.
Sloths were appropriately ranked number one. The kid has long appreciated their laid-back expressions and lack of haste.
Horse, sheep, and cows seem to be Minecraft references.
Mongoose at #10 is because the Portland Zoo has a truly adorable one in a very cool habitat.
Please refer to this list unless notified of a change. Thank you.