Advertisement I thought only some species were capable of stridulation, but I swear I just saw/heard my B. auratum male attempt it-- and kind of pull it off actually. I picked up his enclosure to look inside and see if he's flipped yet (looongesssttt pre-molt eeeevvverrr) and breathed through my nose down into the KK through the slats without really thinking about it bothering him. The minute my breath hit him, I watched his pedipalps and chelicerae begin to move and sure enough heard what sounded like stridulation. It was an audible brushing sort of sound, akin to dry bristles on a wooden surface. His Pedipalps moved in an almost cycling motion and his chelicerae shifted up and down against one another. It happened pretty quick but I was so perplexed I watched the whole thing raptly. I attempted to get him to do it again with another breath-- nope, nothing doing. One trick pony for now. Perhaps tomorrow I will see if I can get him to do it again and take a video. But with my luck he'll flip in the next half hour just because I want to do that. I've never even seen any of my other tarantulas do this before so I'm not exactly well-versed in stridulation. Can Brachypelma stridulate? Have they always been able to stridulate and I was woefully uneducated on the subject? Will Batman be able to thwart the Joker's evil plot???