Or all over your bath tub, my GBB made sure to leave me presents after I sent him off. Fortunately I was able to wash most of them off and I have thick skin on my feet. As for measuring I was fortunate enough to have my C.darlingi spread out and stay that way when I put a ruler over her cage.The real problem is when THEY'RE into YOU.
I will say this too. Large Terrestrials are a lot different than arboreals of like size... Arboreals have the advantage of agility, climbing ability, and for Cyrio, Pokie, potent bites. So it almost needs to be pictured in a different perspective..
I've noted in how they attack their food, all of my NW terrestrials straight up tackle and subdue their prey, my G.pluchripes wrestled with a roach for a good 10 minutes until it was weak enough to be eaten. My African OW remind me of crocodiles as they bust out of the ground and drag the prey down and then subdue it down there. Now for the aboreals by the time they get to the prey it's too late, they will snatch it and carry it back to their hide without breaking a sweat, in that time the prey is already neutralized.
I love watching the various hunting strategies of the different species or types of tarantulas too! One of the biggest draws to arboreals is the way they hunt and how fearless and powerful they are for a fairly light build. They are sneaky too. My Psalmopoeus are so alert to movement and approach slowly and intently to slow moving prey before positioning themselves in a perfect position to pounce....at least with superworms. It seems like they sense the size of the prey and how careful to be when attacking. If I drop a cricket and it moves too much, they just bumrush the thing with no hesitation....crafty buggers they are, and good at what they do!