They do look a little off, especially the dog and cat. The cat is literally 'derp'
Buy yeah, it's knowing that they're clones that's freaky, not the actual pictures. Freaks me out a little too.
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http://www.youtube.com/watch?v=7MwZfXy9mA4
http://osu.ppy.sh/stat2/shinytentacool-0.png