Gargantuan Frog

This is the mini boss in the Lakebed Temple in Twilight Princess. It has eggs on it's back that release tadpoles to make the battle more difficult. Link must toss a bomb into it's mouth once it opens it, and that will bring the frog down and expose it's vulnerable tongue. Slashing the tounge and then repeating the whole process a few more times earns Link the Clawshot.