Unfortunately, short of being present when they hatch, there really is no definitive way to know how old they are. Box turtles are omnivores, which means they will eat a variety of both animal and plant-based foods. Box turtles are easy-going reptiles whose needs in captivity are highly complex. Full grown three-toed box turtles are typically 4 to 6 inches long (10.2 to 15.2 cm). In order to do this, it is crucial to keep in mind that there are many different species and subspecies of box turtles and that box turtles live in many different types of environments in Mexico and the United States. Eastern box turtles are one of the most commonly seen turtles in the wild. Eastern box turtles for sale as babies, adults or juveniles. The largest recorded Eastern box turtle measured an impressive 7 13/16 inches. Here are a few tips for keeping the Eastern box turtle (Terrapene carolina carolina) alive and well in captivity, including care of the hatchlings.First off this is not an easy species to keep when compared to others, and I would never recommend this one to a "first-timer" at keeping turtles. Box turtles, also called terrapins, are terrestrial turtles, but most species require constant access to fresh water. Three-toed box turtles reach an adult size between 4.5 and 6 inches as well, with the record for largest three-toed box turtle being 6.5 inches in size. Eastern box turtles have a high, domelike carapace with yellow, orange or olive markings on a darker brown or black background. The eastern box turtle is a small reptile, reaching only about six inches in length and weighing less than one pound. Hiding places are required. Minimal size for one adult is 4 feet by 4 feet. The Carolina (eastern) group (colored in orange, yellow, green, and periwinkle) lives in the east and the Ornata (western) group (purple and blue) lives in the west. In the wild, box turtles are omnivorous and eat whatever they can get their beaks on. Three-toed Box Turtle Size. Popular box turtles kept as pets include the eastern box turtle (Terrapene carolina carolina), the Coahuilan box turtle (Terrapene coahuila), the ornate box turtle (Terrapene ornata ornata), and the three-toed box turtle (Terrapene carolina triunguis). There are currently four recognized species of box turtles: Common box turtle, Coahuilan box turtle, Spotted box turtle and Ornate box turtle. Three-toed Box Turtle Life Span The Box Turtle is a species like no other. Eastern box turtle for sale. The eastern box turtle is known to appreciate a moderately moist forest floor with good drainage. These turtles are small and easy to keep in an indoor or outdoor enclosure. The proportions of animal versus plant-based food items will depend on both the age and the species of box turtle that you are feeding. Box turtles are some of the most popular species of turtles for sale in the world. In the wild, Eastern box turtles prefer thick green forests and mixed forests as well. Ideally it should receive morning sun and late afternoon sun when they are most active. Planting shrubs and plants should provide shaded areas. The carapace is brown with variable patterns of orange and yellow markings. There are, however, a variety of ways to approximate a turtle’s age and make some fairly educated guesses that might satisfy a pet owner’s curiosity. Box turtles, also known as box tortoises, comprise a genus of turtle native to United States and Mexico. Box turtles are mostly found in North America and include the Eastern, Western or Ornate box turtle for sale, as well as the 3 toed box turtle and a few other species. Generally, hatchlings and juvenile box turtles are more carnivorous than adults, which are typically more herbivorous. This timid creature is native to both the United States and Mexico, though there is an Asian species of box turtles living in the Eastern region of the globe. The reptile’s carapace is dome-shaped and covers most of its body, and has ridges and furrows that develop with age. Turtles nest during late spring to mid-summer and the females will seek out sunny sites with damp sand or soft soil for their eggs. Tortoise town offers captive-bred, vibrantly colored male and female Eastern box turtles for sale in the following ages/sizes: Eastern box turtle hatchlings, Well started baby Eastern box turtles, as well as yearling, juvenile and sometimes young adult eastern box turtles. Identification Guide to Eastern Box Turtles. Eastern box turtles grow to an adult size between 4.5 and 6 inches. Above, two Eastern box turtles cross Croom Airport Road in Upper Marlboro, Md., on Sept. 22, 2015.