Years ago when I was visiting family in Hong Kong I took a day to hike up Victoria Peak. Hong Kong is sub-tropical, so you get all kinds of interesting plants and animals there. One such animal is this particular sort of spider...

Whilst hiking up the Peak, I got a bit shagged out, it being really hot and humid that day. So I stopped, and was just about to put my hand up against the rock wall to lean for a bit. Something made me look first.

I nearly put my hand on one of these. IIRC, it was around 25cm or so from tip of leg to tip of leg. Not poisonous though.

_{Told you not to look.}