One hundred dogs (83 intact males, 15 castrated males, and two intact females) underwent 110 perineal herniorrhaphy procedures. Mixed-breed dogs (n = 32), miniature poodles (n = 14), Boston terriers (n = 11), and Pekingese (n = 9) were represented most frequently. Perineal swelling (n = 48) and a perineal defect on rectal palpation (n = 31) were common clinical signs. Twenty dogs had urinary bladder retroflexion and were significantly more likely to have elevated serum urea nitrogen and creatinine concentrations, hyperkalemia, hyperphosphatemia, and neutrophilic leukocytosis. Only five of 43 dogs evaluated radiographically had prostatomegaly. Of 30 dogs receiving oral barium, all had rectal deviation. The most frequent complications during the hospitalization period were incisional (n = 35), followed by rectal prolapse (n = 9), tenesmus (n = 8), and depression (n = 8). Fifty-six of 70 dogs with follow-up had no complications.