Geographical distribution: Crocodylus porosus has a wide distribution. It inhabits mainly fresh water all over the world.
- Crocodylus porosus is commonly called marsh crocodile (kumir)
- Body is covered with an exoskeleton of horny thick epidermal scales provided with dermal bony plates.
- The general color of the upper parts is dark olive-brown.
- The average length of this species is 4 to 5 metres.
- The head is triangular and rough at the top.
- The snout is stout rather broad.
- Limbs are pentadactyle with five fingers and four toes.
- The fingers are webbed at the outer toes are broadly webbed.
- The tail is long and laterally compressed.
- Mandibular symphysis is short, extending only to the level of fourth or fifth tooth.
- There are upper and lower jaws, each contains 19 teeth on either side.
- The fourth mandibular tooth fits into a notch in the upper jaw.
- The fifth upper tooth is the largest.
- Vertebrae are procoelous.
- The nuchal scutes are six in number which are packed closely together forming a square.
- The dorsal shield is composed of four, sometimes of six rows of larger scutes of which the central pair is the broadest.
- The ears are covered by movable flaps of skin.
- Crocodylus porosus are oviparous.
- They are predators.