Deadly Monsters Patched is a fork of Deadly Monsters by bigbang87, patching long-lasting bugs and adding additional configurability.

Changes:
• Blindness caused by unborn babies can be disabled
• Haunted cows will only skip to the next night instead of resetting the world time (issue #15)
• Loot tables have distinguishable names (issue #16)
• Tinkers' Construct weapons are now viable against haunted cows (issue #18)
• Haunted cows are treated as monsters (issue #19)
• Regular cows won't convert to haunted cows anymore (issue #20/issue #22)
• Support for modded biomes (issue #21)
• Topielecs spawn like regular monsters instead of being chance-based on squid spawns
• Fixed crashes regarding Topielec attacking AI (issue #30/issue #31)
• Other minor changes

Original mod post:
Are you bored of zombies and skeletons? Do you want something new, something scary? If so, this mod will make you scared. New unique monsters, terrible and dangerous creatures. Use the new fortification blocks to defend yourself against them. If you possess the knowledge about these creatures, you can use the new items for your benefit.