T standing with her butt up

[mak_manning3]

My girl Baby comes out of her hide and stands like this with her butt up when I turn on the heat in the room. I’m not letting it get ridiculously hot or anything but it’s winter and I’m trying to keep her warm. Anyone had anything similar happen with theirs? I can’t tell if she’s doing this because she likes it or not.

 

[FishermanSteve]

My big 6” female that’s thicc AF will do this and it always baffles me lol

 

[nubka]

My Aphonopelma Chalcodes does this whenever she feels threatened. When first got her, she tended to flick hairs, but somehow decided that rump-raising was more effective...

 

[spodermin]

Yeah as mentioned to my knowledge this is defensive behavior. Hard to say what is causing her to do it but its hilarious. Perhaps you shuffling about in the room? Or if the heater is blowing on her the air disturbance would certainly do it