What disease can cause stillbirths, infertility, and abortions in animals?

Brucellosis is a bacterial infection that significantly impacts reproductive health in animals, leading to serious outcomes such as stillbirths, infertility, and spontaneous abortions. It primarily affects livestock species, including cattle, sheep, and goats, but can also infect dogs and other animals. The causative agents, particularly Brucella abortus in cattle, disrupt the reproductive processes, resulting in failed pregnancies and reduced fertility. The disease is often transmitted through animal contact or consumption of contaminated food products, highlighting the importance of veterinary intervention and management practices to control its spread.

The other options represent diseases with different effects. Rabies primarily affects the nervous system and is almost universally fatal once symptoms appear, but it does not cause reproductive issues. Distemper affects other body systems, particularly the respiratory and gastrointestinal systems in dogs, without directly causing reproductive failures. Parvovirus primarily causes gastrointestinal problems in young dogs, not reproductive complications. Therefore, brucellosis stands out as the only disease among the choices that is notably associated with reproductive failures in animals.