• Bovine Freemartinism:
• Occurs in over $90\%$ of heterosexual twin pregnancies in cattle.
• Early chorionic vascular anastomoses allow sharing of fetal blood circulation between the male and female co-twins.
• Testicular hormones from the earlier-developing male fetus (Anti-Müllerian Hormone [AMH] and testosterone) enter the female co-twin's circulation:
• Müllerian ducts regress, preventing normal development of the uterus, cervix, and cranial vagina.
• The female co-twin is rendered permanently sterile (Freemartin).
• The male co-twin develops normal reproductive tracts and is typically fertile.
• nalysis:
• (Female is sterile): Correct.

Correct option: (2) Female is sterile

• Hernial Predisposition in Domestic Species: Inguinal hernia is an anatomical defect occurring with high frequency in the bitch.
• Anatomy & Hormonal Influence: The short, broad inguinal canal in canines, coupled with estrogen/progesterone-induced relaxation during estrus or pregnancy, permits herniation of the gravid or nongravid uterus, omentum, and urinary bladder into the subcutaneous space around the caudal mammary teats.

Correct option: (3) Bitch