Don't Starve Walkthrough → Biomes (Jungle Swamp)
Image courtesy of Lora_Palmer
So, you've lived for about 10 days, eating and gathering. Between 7 and 10 days, you'll be attacked. Your character will say something like, "I hear someone!" and you'll hear growling in the background. If you live in a pig village, you have nothing to fear, even on day 100. You can simply run in circles; the hounds* won't catch you, and the pigs will aggro the hounds. Weapon too weak? Then it's time to head to the swamps for a new one!
If you've found swamps (they're easily distinguished by the purple turf), run through them and collect reeds. If a strange tentacle emerges, move out of attack range. See the spikes? Want them? When the tentacle is just slightly protruding from the ground, strike it with your weapon and run back (it will perform a circular attack that deals a fair amount of damage, though not much). When it straightens up, approach and attack, then immediately retreat. Wolfgang will need 16 hits with an axe (I go straight to the swamps on the first day, and only craft a spear in winter for the magic staff). About three tentacle spikes will last you 20 days.
Hounds are aggressive creatures. They attack in packs (two or more) and can hibernate at night (waking up in the morning, like other hibernating creatures). Attacks occur approximately every 3-12 days. In winter, attacks become more frequent. Before the hounds appear, growling will be heard, and the character will report hearing something.
See also:
Shadow of Chernobyl - X-10 Lab
Fallout: New Vegas - Medium Armor
Diablo 1 Walkthrough - The Hive