The Kushenisura is straight ahead the most bizarre creature these Humans have seen, the Goblin Demons are used to them of course. Well most of them!
Talking it through with one of the Sub Leaders who saw living Kushenisuras back at the Demonic Realm, pointing out that this specific Goblin Demon is almost an elderly.
He states that the reason why the Kushenisura overwhelmed the Kingdom with snot, instead of just charging in and using its massive body size and endurance to her advantage, is to render her targets defenseless.
It's their main hunting method, they render prey defenseless by covering them with slippery snot and then just charge and eat everything and everyone who can't run away.
Although animalistic, it proves superior hunting techniques and points towards the sole fact that the Kushenisuras are perhaps the smartest beings of the animal kingdom, in the Demonic Realm.