The Big Toad (in-game name Jättikonna) are larger relatives of the Konna found in Collapsed Mines and Fungal Caverns.
They appear fairly benign, not moving at all, but if the player gets too close they will shoot out their tongue, similar to the tentacle attack of Turso. The Jättikonna also possesses some armor exact values are to be determined.
Like the Turso, the Melee Immunity Perk will negate its damage.