Reproductive Problems --------------------- Egg-binding is a fairly common problem among female box turtles. This condition results when a pregnant female cannot pass an egg by herself. She typically strains excessively against the obstruction. The egg may be oversized, or there may be metabolic or other reasons for her inability to pass the egg without assistance. Radiographs (x-rays) are usually made to confirm that the female is, in fact, fertile with eggs. Then, hormone injections and sometimes aspiration of the egg's contents are necessary to expel the stubborn egg. Several other conditions are seen in reproductively active female box turtles. Metritis (infection of the uterus) and egg-yolk peritonitis (ruptured egg-yolk or yolks within the body cavity) are the most common.