Some monster have special attacks that are so strong they knock your character backwards, sliding you back a little bit (or quite far away in the case of some mobs). In addition to moving you backwards, these attacks interrupt spells and ranged attacks and often deal significant damage.
Mobs that Knockback
Mob Family Special Attack Distance Antica Shoulder Slam Beetle Rhino Attack Behemoth Shock Wave Buffalo Snort Bugbears Heavy Whisk Craver Carousel (NM Only) Doll Panzerfaust
Doomed Whip Tongue Ghrah (Bird Form) Damnation Drive Goblin Goblin Rush Goobbue Uppercut Hippogryph Back Heel Lamiae Gusting Gouge Lizard Blockhead Mamool Ja Somersault Kick Mandragora Head Butt Moblin Goblin Rush Puk Crosswind
Quadav Head Butt
Wrath of Gu'Dha (Dynamis Only)
Ram Ram Charge Raptor Scythe Tail Receptacle Empty Seed Sheep Sheep Charge Worm Full-Force Blow Xzomit Siphon Discharge Yovra Concussive Oscillation