They are called carnivores because they eat other animals as food.  They do not eat any vegetables or herbaceous plants except meat.  Normally a crocodile can live up to 35-75 years old, you will be surprised to know that they grow 4000 teeth in their lifetime.  But their jaws have 60-110 teeth.  There are certain teeth which are always fixed and always do some important work.  All those teeth are in standby mode anyway.  However, small teeth fall out after a certain period of time.  In this way, their teeth fall out and grow again about 50 times in their entire life.

Their jaws exert 5000 pounds or 2268 kg of pressure per square inch.  Because of this, anything that enters the crocodile's jaws does not come out easily.  And if it ever comes out, it must come out in two pieces.  The bite of crocodile teeth is stronger than the bite of shark teeth.  Their tails are also very strong and they strike with their tails.  There are slight differences between crocodiles and alligators.

Crocodiles do not sweat at all.  They used different methods to keep their body cool.  If you see crocodiles in real life or if you see pictures of crocodiles, you will almost always see them smiling.  The reason for being like this is that the method of keeping the mouth open to keep one's body cool is called mouth gaping.  It may seem angry.  But they open their mouths like this and release heat from the body and sleep.


কুমির কোন ভাবেই ঘামে না। এরা নিজেদের শরীর শীতল রাখার জন্য বিভিন্ন ধরনের পন্থা অবলম্বন করে থাকেল। সত্যিকার অর্থে কুমির দেখলে অথবা কুমিরের ছবি দেখলে প্রায় ক্ষেত্রেই দেখবেন এরা মুখ হা করে থাকে। এভাবে থাকার কারন হল নিজেদের শরীর শিতল রাখার জন্য মুখ হা করে রাখার পদ্ধতিকে মাউথ গ্যাপিং বলে। দেখে মনেই হতে পারে হয়ত রাগ দেখাচ্ছে। কিন্তু এরা এভাবে মুখ খুলেই ঘুমার এবং শরীরের হিট বের করে দেয়।