Penguins

You can breed Penguins with a rare kind of fish. (example:salmon) When breed, it will lay an egg. Penguins rarely swims. When a Penguins get bored, they fell asleep. Penguins is a passive mob. If you kill one, it has a 20% drop it's wing. Works exact like elytra but 2x more durability and much much slower. Penguins spawn at every biome with cold temperatures. All biomes with cold temperatures except Jagged Peaks. You can also leash them with a lead. That's all!