Funny how angry that monkey becomes when the card had disappeared, and how it appears relieved when the card reappears. This makes it clear the monkey understands something happened that is not the way it should be. Shows that monkeys are intelligent creatures, after all.
Anger or surprise (hard to tell from a low quality gif), the reaction shows the monkey did see something was not the way it should be, showing how intelligent it is, and that was my point.
True, it is hard to tell from that particular gif, but I've seen the actual video many times the last few years, and that monkey is clearly "mind blown!" ;-)