Petition for Writ of Replevin. This should be filed in the Justice Court.Once filed, you will request a form called a Summons. Your ex took your dog after you broke up. Write a letter to the person who has possession of your pet, requesting its return to you. Include copies of your ownership evidence with the letter. A writ of replevin is a prejudgment process ordering the seizure or attachment of alleged illegally taken or wrongfully withheld property. The SER-001A is required for all writ-related services (in addition to the SER-001) being submitted to the Sheriff's Office for service. A writ of possession is issued as a provisional remedy in a cause of action for claim and delivery, also known as replevin. After five days at the animal shelter, Bibi was sterilized and adopted out.