You use your sickle-like talon to disembowel him, spilling his intestines onto the ground. Roaring in agony "You won’t kill me!" he lashed out, "that’s what you think, hatchling" you hiss back. The hatchling starts struggling so you decide to end this fast. You could rip his still beating heart out, slit his throat, rip his head off or rip his lungs out.