Bah. Weak little babby man!
I live on the edge of a bushland region, so I get quite a lot of snakes around here. Usually they're just blacks, which are cowards and will run away from you. Occasionally though you can get a Red-Belly or Brown snake, which are venomous. The Brown really is the bad one, one of the world's deadliest snakes. And those bastards will happily
chase you. Most snakes are scared of humans, but browns will happily go for you if you annoy them. Best thing to do with snakes though if you encounter them outside is to just ignore them or let them slither by. 99% of snakes are more scared of you than you are of them, and usually only attack idiots who think
"Cor! Lets go chase the snakey snakey!" If I see a snake, I just either walk around, giving him a wide berth, or just let him go on his business.
Spider problems though are usually removed with the application of a heavy book. Admittedly though, seeing a Black Widow's likely to make me vacate the room, board up the room, and then set fire to the house to ensure the spider can never come near me again.