Objective: To describe repair of perineal hernias in dogs positioned in dorsal recumbency.Study design: Retrospective case series. Sample population: Twenty-three dogs with perineal hernias treated by herniorrhaphy, with or without adjunctive procedures.Methods: Medical records from 2016 to 2020 were reviewed for technique description and animal outcomes, and owners and referring veterinarians were contacted for follow-up information. Results: Internal obturator muscle transposition (IOMT) was performed in 22 dogs, and polypropylene mesh repair was performed in one dog. Tran-