Squatted :: Squat (n.) The angel fish (Squatina angelus).
Squatter :: Squaterole (n.) The black-bellied plover.
Squatter :: Squatter (n.) One who squats; specifically, one who settles unlawfully upon land without a title. In the United States and Australia the term is sometimes applied also to a person who settles lawfully upon government land under permission and restrictions, before acquiring title..