Up to 30 cm
Bell-shaped
Approximately 4-5 centimeters
Small and slender
4-7 inches (10-18 cm)
Dome-shaped carapace, hinged plastron
10-15 mm
Slender
Varies (depending on breed)
Medium-sized
Varies
Medium to large
20-25 inches (50-63 cm)
Medium-sized and muscular
Varies (typically 21-25 inches)
Medium-sized, muscular
Varies depending on species, usually between 4 to 18 inches (10 to 45 cm)
Box-like
50-60 cm at the shoulder
22-28 inches
15-18 inches
22-27 inches
Muscular and athletic
Up to 85 feet
Large and quadrupedal
20-26 inches
Large and heavy
20-35 cm
Cylindrical and worm-like
50-57 cm