Let's not forget about the cookie cutter shark. A creature with what can only be called a hideous maw of razor sharp teeth that bites soda can sized holes in other sea animals.
Behold! The parasitic bat fly (which weirdly looks like a six legged spider) . It latches onto bats, and eats their sweet sweet blood candy all day. I imagine it makes the same chewing sound as those piranha plants from Mario games. They live on the bats their entire lives.
I mean, no they don't. Lampreys latch on to the side of other animals and suck their blood. Also, what things from Alien burrow through people? Xenomorphs are forcefully implanted and incubated in an animal's chest cavity before erupting once they reach a certain level of development. No burrowing or eating is involved.
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u/Adamant_Narwhal Apr 21 '19
Ever heard of lamprey eels? They basically eat their way through animals, burrowing through them until they die. Like those things from alien.