A 19-year-old Southport man has been arrested over a gruesome cat killing, in which its blood was apparently used to write a threat on the door of a Gold Coast house.

The man was arrested by police on Tuesday night and remained in custody overnight. He is yet to be charged.

Cat's blood was used in a threatening message to an Arundel household. Credit:Nine News

Early on Tuesday, a decapitated cat’s body was dumped on the front doorstep of an Arundel home, with the words “WHERS [sic] MY MONEY? TIK TOK!” written in blood on the garage door.

A car parked in the driveway of the Hazel Court property was also torched.