Shriekers are fictional creatures from the Tremors film series, known for their distinctive ability to detect vibrations in the ground. They are a type of Graboids, which are large, underground-dwelling monsters. Shriekers are smaller than Graboids and have a unique feature: they emit loud, shrill cries to communicate and attract other Shriekers. These creatures reproduce by consuming their prey and then laying eggs, which hatch into more Shriekers. They are characterized by their fast movement and can be quite dangerous due to their aggressive nature. Their primary weakness is extreme heat, which can incapacitate them.