Well, not to get into a debate here (as I said in post) but everything you described are not "emotions" they are responses, memory - learned behaviors. Also, "smart" is not the same either. However, let me qualify my previous statement - there are basic emotions: pleasure, fear and aggression and all animals instinctively respond to these(approach, retreat, attack). Then there there are "higher" emotions such as happy, sad, love, sorrow and it is questionable that reptiles have these higher emotions.
I have lived with animals my entire 50 years on this earth and am fully aware of their "personalities," inquisitiveness, intellect, ability to learn, etc. - (even among the insects for the latter) so I do not underestimate them nor do I lump them all into one mailbox (so to speak). However, animals are not humans and we, as humans, like to attribute our way of looking at the world to other life as well. Don't get me wrong, I am certainly not saying that we are "better" than animals. Personally, I feel a being is a being is a being and all deserve respect and we should always be open to "surprises" if they should present. Hope this clears up my point of view on this for you.
lele
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0.1 veiled - Luna
0.2 felines - Kyndra and Líta
1.0 African Clawed Frog - Skipper
0.5 Mad. Hissers
0.1 Chilean Rose Hair Tarantula (no name yet)
?.? Goliath Bird-Eater Tarantula (no name yet)