1.5 to 2 meters (5 to 6.5 feet)
Large and heavy-bodied
46-56 cm (18-22 inches)
Medium-sized dabbling duck
49-53 cm
Slender
2.5 - 3.0 meters
Streamlined
4-6 feet
Large and dome-shaped shell
Up to 1.8 meters (6 feet)
Elongated and cylindrical
Up to 40 cm
Elongated and slender
Female - 15-20 mm, Male - 5-10 mm
Round abdomen with long, slender legs
7-9 inches
Stocky with a large head and bumpy, scaled skin
20-48 inches
Slender and elongated
Approximately 2.5 meters (8 feet)
Large and flightless
1.2 to 1.8 meters
Slim and agile
0.5 inches to 2 feet
Small and slender with limb pads
40-55 cm
Slender and cat-like
51 to 90 cm (20 to 35 inches)
Slender and streamlined
20-30 cm
Small and compact
22-25 inches
Medium to large, muscular
2.5 to 4.5 inches
Small and slender
