Just more or less defensive depending of nature of that particular speicemen
These animals defend themsleves as any other animal would do if they get "pressured" into a corner, but they rather run and hide.
For example, the P.Murinus sp. ( Usambara), that one will defend it's grounds very fast compared with a Versicolor, but they are not mean, they defend themsleves.
A versicolor will also defend itself after awhile, but probably go for a run away.
I was holding back towards getting more defensive speices before, but now when I have some of them, the so called "mean" ones,, they don't really seem more "mean" than the so called " docile" ones.
My Chaco, 6 inches and she's a sweety, but she has also got "pouty" a couple of times with legs up in the air leg like an Usambara mode.
I woulds say that it is more reason to say that to find out what T's has a "longer" or "short" temperament before it defend itself.
"Mean" , no,,they don't want to tag you for being mean for the heck of it , just for defense IMHO.
My 3.5" juv. male A. geniculata does not hesitate to defend its turf, by rearing up, stridulating, and then pouncing on anything close to it (usually its water bowl). it also pounces(jumps?) to the top of its container if i accidentally breath into its container, sinking its fangs into the mesh/cheesecloth, pretty entertaining!
I define the term "aggression" as an outward, unproved action towards another.
T's act out only when provoked (by touch or sight), when their space in invaded.
There is aggressive defensive postures: King Baboons, Guyana Skeletons (stand and deliver behavior).
Outward aggressive behaviour: Cobalt Blues, Sun Tigers, Puerto Rican Pygmy, Pampho. vespertinus, animals that rear up when you touch their environments.
Selenocosmia dichromata and Red Feather Legs get my votes for most outwardly aggessive, the one most likely to "chase me around the room" when provoked. Triple Threats: Fast, Tree Climbers, and Potent venom.
and the most aggressive of all, hands down: my exgirlfriend.
I would have to agree that I don't have any 'mean' spiders....just some are more defensive than others.
I actually prefer the ones that will stand and defend, like the C crayshawi. I can actually get her to calm down enough to be handled.
However, the ones that rear up, run like hell, and are skittish, are the ones I can't deal with LOL
Like my Usambaras, very unpredictable.
Some of mine have a repuation just by that particular species, but I've seen NO aggressive behaviour from, like the H maculata. She is the shyest spider I have. I can reach in and take her water bowl out for cleaning and she just runs and hides.