A three year old nulliparous Boerboel bitch presented with complaints of fever and inappetence six weeks after an elective caesarean section was diagnosed with an extrauterine foetus. A per-cutaneous abdominal ultrasound revealed a foetal sac showing a well-developed skeletal structure and the absence of foetal movement or heartbeat. During laparotomy, a foetal sac containing a dead foetus was located between the spleen and the stomach. The foetal sac was excised following ligation of its mesenteric attachment to the spleen. The previously operated uterus was observed to have involuted but revealed a small bud observed on the middle portion of the left uterine horn. The histological findings of the foetal sac revealed fibro-adipose tissue with numerous congested vessels. It was concluded that the Boerboel bitch had a secondary abdominal ectopic pregnancy and recommended that owing to the difficulty of diagnosing the condition before or during routine elective caesarean surgery, post-operative abdominal ultrasound would have been instructive.

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