When I was younger I had a couple of terantulas as pets, tho they were different species, and a lot of their behavior is usually ascribed to that, so I never co

When I was younger I had a couple of terantulas as pets, tho they were different species, and a lot of their behavior is usually ascribed to that, so I never could make any direct comparisons. But at the conventions were breeders would sell them, and let people handle them for photos and such, they'd often explain how that particular spider was the more "laid back" one. Part of that is probably just to calm people down, but I don't see why a spider shouldn't be able to have a bad day. Mine certainly weren't 100% predictable but also had their more active/passive phases, would sometimes skip on food or sometimes be still aggressive even after being fed. Putting all that down to pure biological determinism feels a bit too simplistic.