As for the jumping spider? They can be escape artists. One day I put a rather handsome one, a red and black one, in my terrarium, and within half an hour, it had scaled the glass wall of the bowl and escaped.
They're fairly intelligent, too. Next time you find one, especially the little gray and white ones, take a small mirror and put it in front of the spider. I did that not long ago and got FOUR reactions from the same spider. Between each reaction I lifted the mirror and then replaced it i front of the spider. First one: raised its forelegs into a V shape, which is how the communicate with another spider. Next, it backed off, and just stared at its reflection. Third reaction: it approached the mirror and touched it. Fourth, and most amazing...it ran around the BACK of the mirror to find that other spider.
Now I imagine there are folks out their eeking in dismay. Fear of spiders is VERY common in us naked apes. But I find them fascinating. If they're in my house, I'll catch them and release them outside. (the best way to catch one is..honest to pete, using a cardboard cone shaped party hat.) It's probably why my mother would shake her head (after shrieking) and say I wasn't right. Well, I'll own it.
These are the voyages of the small ship, "Grus Egg".
2011 17" Spirit Deluxe, "Grus Egg"
"Civilization began when we stopped eating horses and began riding them."