Facehugger

s The Face-Hugger is the 2nd Stage in the Xenomorph Life Cycle. They Lay an Embryo inside a Living Host and Dies after a Long Time

Dan vs Alien
In Dan's Nightmare 2 Face-Huggers are Dead near Chris and Dan and they have Chestbursters Emerging from them. 2 Face Huggers attacked Dan in his Apartment and Mr. Mumbles and Dan Managed to take Care of Them. In Hadley's Hope the Colonists managed to Keep the Face-Huggers alive from the Derelict and on putted it's Ovirpositor near Dan. Bishop Disected one and Studied how can it lay and Egg inside a Living Host