A FLYING DINOSAUR LIKE CREATURE BORN FROM THE MOUTH AND GROW FAST AND GIVE BIRTH TO OTHER AND OLD ONE DIES. FINALLY ONE FLYING DINOSAUR WENT ON RAMPAGE ANOTHER SCENE IS CLIMAX THERE WAS A HUNG STAR FISH LIKE A CREATURE KILLED BY A HERO WITH THE HELP OF SOME TANKER OR FIRE FIGHTER POUR SOMETHING INTO THE CREATURE MOUTH AND IT EXPLODES.
I’m pretty sure that sounds like Evolution (2001) 😀