We need a new mob for these swamp biomes, and what better mob that Frogs? they could attack spiders, be able to jump and walk on lily pads, be able to attack with it's tongue if provoked, and they can add atmosphere to those empty swamps. Plus there could also be a variation of those said frogs, Toadstools, which are just frogs covered in brown mushrooms that spawn in mushroom biomes.
So, what do you think?
I already made models for my frog npcs haha. got bored and did alot of theory crafting.