Non-human emotions are an interesting topic and I’d expect the same perceived behaviour could come up from all sorts of different origins, but, as I have seen my friends (and myself) with mammals, birds, reptiles, fish, and spiders that live with humans and their behaviours, I’m not surprised to conclude they have their own emotions.

When I was in high-school, I had a fish, a Banded knifefish, who welcomed me home every afternoon by standing upright on its tail by whatever side of the aquarium I was. I gave it food at the end of a stick and played games where it would hunt the food. If sometimes, if I stopped moving the stick it’d come to my side of the aquarium and stare at me until the stick started moving again.