Toxic Sludge

Toxic Sludge is one of the new mobs since the 1.1 update.

It only comes around after you've defeated the Wall of Flesh, just like the other hardened mobs that spawn.

They usually spawn underground at the first dirt layer, but it has been shown that they actually may spawn in the dirt layer.

It takes on similar characteristics to the Slime mobs. It moves in the exact same way but seems to bounce more often. It moves in the same way on water as slimes do.

Other differences to tell Slimes and Toxic Sludges apart is quite easy. They are dark green and have a face and look like 'Sludge'. It can inflict poison which lasts for around 6-7 seconds, during this time your health will slowly fall.

It has 150 health.