It is usually brown although other color variations exist. Posterior marginals of the carapace are strongly serrated in juveniles. The plastron usually features radiating lines. Adults form a single plastral hinge. C. dentata is webbed-footed and highly aquatic, especially as juveniles.
Adults spend more time on land and prefer an area with plants.
This species is environmentally sensitive. Water must be filtered and kept scrupulously clean. In the wilds, C. dentata inhabit streams in mountain forests, up to 3500' above sea level. Youngsters usually prefer to eat in the water, while adults will readily eat on land. They are omnivorous.