They can grow up to 2 feet in length.
They have a long and slender body with a flattened head and a broad, triangular mouth.
13.5-15.5 inches (34-39 cm)
Medium-sized, compact
50-60 cm at the shoulder
Medium-sized and muscular
3.5 to 4.5 cm
Robust, large size
6-20 inches
Deep-bodied
50-65 cm
Sturdy and muscular
4.5 to 6.5 feet (1.4 to 2 meters)
Athletic and streamlined
25-30 cm
Elongated, cylindrical
1.2 to 1.5 meters (4 to 5 feet)
Large and robust
Around 15 to 20 centimeters
Elongated and cylindrical
87-153 cm (34-60 inches)
Slender and streamlined
2.2-2.5 meters (7.2-8.2 feet)
Stocky and heavily built
1.2 to 1.8 meters
Slender and elongated
Approximately 6-8 meters
Large
15 to 20 centimeters (6 to 8 inches)
Small, cylindrical, and elongated
17.7-23.6 inches (45-60 cm)
Small and compact
8-15 inches
Medium-sized
25-30 cm (9.8-11.8 in)
Small, slender body with long legs and toes