5 動物 That Are Terrifyingly Hard to Kill 

The animal kingdom consists of a vast number of beautiful and intricate creatures who have learned over the eons to adapt to the world surrounding them--and that's totally cool, because if they come in our yard we can just kill them.
キーワード: unusual, 動物, 驚異, immortal jellyfish, giant snails, insects, water bears, lung 魚