'Otariid Keratitis' occurs in all populations of eared seals evaluated. A large-scale epidemiological study is ongoing to identify the risk factors that contribute to this disease. Exposure to chronic sunlight appears to be an important risk factor as shade diminishes clinical signs; animals kept out of sunlight the majority of the time have less severe clinical signs. Age may be important since exposure accumulates with aging. Progression of the disease is also associated with secondary opportunistic bacterial and fungal infections. The surface immune system may be imbalanced contributing to these infections and progression.

Transitional cell carcinomas (TCC) of the urinary bladder were diagnosed in four related fishing cats (Prionailurus viverrinus). The major clinical sign in each case was persistent hematuria unresponsive to medical therapy. Cystotomy and biopsy provided an antemortem diagnosis in three of the fishing cats before euthanasia because of progression of clinical signs. The diagnosis was made in the fourth cat after euthanasia because of renal failure. Hematuria improved temporarily in one of the cats diagnosed antemortem and treated with piroxicam and carboplatin. Attempts to isolate a herpesvirus in two of the cats failed. Histopathologic appearance of the TCC was similar to that described for other species. TCC metastasis to the lungs was noted at necropsy in one cat; metastatic disease was not noted in the other fishing cats on gross or histopathologic examination. TCC of the urinary bladder appears to be more prevalent in fishing cats than in other species of domestic or nondomestic felids.

Transabdominal ultrasound was used to monitor the reproductive tract of a female giant panda (Ailuropoda melanoleuca) for three consecutive breeding seasons starting in 2001. Parturition did not occur in 2001 or 2002. In 2003, uterine enlargement was noted 109 days after natural mating occurred. A twin pregnancy was detected via transabdominal ultrasound 134 days following natural mating. Four subsequent ultrasound examinations, performed at 137, 138, 140, and 142 days postmating, documented fetal development. The female gave birth to one infant 150 days postmating. Zoo Biol 23:449–461, 2004. © 2004 Wiley‐Liss, Inc.

Urinary corticoids were measured in humans (n = 9) in frequently collected urine samples taken during a 48 hr period, and in captive western lowland gorillas (n = 5) and free-ranging mountain gorillas (n = 3) from samples taken from 0700 to 1800 hr. In each study, the highest concentrations occurred in the morning hours, then declined gradually, reaching the lowest levels in the afternoon to evening. These data show that a similar diurnal pattern of corticoid excretion does occur in these species. We suggest that if single-sample urine collection for determination of hyperadrenal activity is to be used, urine is best collected during hours of low corticoid excretion.

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