: 77–80  In horses, a fetus may be aborted or resorbed if it has lethal white syndrome (congenital intestinal aganglionosis). Foal embryos that are homozygous for the dominant white gene (WW) are theorized to also be aborted or resorbed before birth. In many species of sharks and rays, stress-induced abortions occur frequently on capture.Viral infection can cause abortion in dogs. Cats can experience spontaneous abortion for many reasons, including hormonal imbalance. A combined abortion and spaying is performed on pregnant cats, especially in trap–neuter–return programs, to prevent unwanted kittens from being born. Female rodents may terminate a pregnancy when exposed to the smell of a male not responsible for the pregnancy, known as the Bruce effect.Abortion may also be induced in animals, in the context of animal husbandry. For example, abortion may be induced in mares that have been mated improperly, or that have been purchased by owners who did not realize the mares were pregnant, or that are pregnant with twin foals. Feticide can occur in horses and zebras due to male harassment of pregnant mares or forced copulation, although the frequency in the wild has been questioned. Male gray langur monkeys may attack females following male takeover, causing miscarriage. See also
Abortion doula
Forced abortion

Notes
References
Bibliography
External links

First-trimester abortion in women with medical conditions. US Department of Health and Human Services
Safe abortion: Technical & policy guidance for health systems, World Health Organization (2015)
Duane-radial ray syndrome, also known as Okihiro Syndrome, is a rare autosomal dominant disorder that primarily affects the eyes (Duane anomaly) and causes abnormalities of bones in the arms and hands (radial ray malformations). This disorder is considered to be a SALL4-related disorder due to the SALL4 gene mutations leading to these abnormalities. It is diagnosed by clinical findings on a physical exam as well as genetic testing and imaging. After being diagnosed, there are other evaluations that one may go through in order to determine the extent of the disease. There are various treatments for the symptoms of this disorder. Symptoms
Duane-radial ray syndrome has two major features that appear in the majority of cases. These two features are Duane anomaly and radial ray malformations. Each feature appears in 65% and 91% of cases respectively. Duane Anomaly
Also known as Duane syndrome, Duane anomaly is a congenital strabismus syndrome that is characterized by certain eye movements. This results from improper nerve development for eye movement.The following are characteristics of Duane anomaly:
Inability to fully abduct (away from the midline) the eye either unilaterally or bilaterally
Narrowing of the palpebral fissure
Retraction of the globe on adduction (toward the midline)
Absence of the abducens nucleus and nerve (cranial nerve VI)
Abnormal eye movement due to the lateral rectus muscle being innervated by a branch of the oculomotor nerve (cranial nerve III)

Radial Ray Malformations
This is characterized by hand and arm abnormalities.