Some mobs don't take damage from stalagmites

Also affects blazes.

I think it's important to clarify that chickens, blazes, cats, and ocelots do take damage from being hit by a falling stalactite; they just don't take damage from landing on top of stalagmites. This is probably intended for chickens and blazes because they fall so slowly. However, cats and ocelots fall quickly, and even though they are immune to fall damage because of the "cats always land on their feet" adage, it doesn't make sense that cats and ocelots are immune to landing on a stalagmite because stalagmites are sharp.

This seems to affect all mobs that are immune to fall damage. The damage from them technically seems to be fall damage, which also causes MC-206674 to be a thing.

I have done some research and I can say that stalagmites work exactly like hay (well, or bed / honey) They just change the fall damage in%. Falling on hay takes 20% of normal fall damage. Falling on the bed 50%. Falling on the stalagmite ~ 500%. This means that the iron golem, cats, chickens, a player with a feather falling will not take damage from stalagmites AT ALL