gallusrostromegalus:

Arguments for why your should base your reptilian dragons off of crocodilians rather than lizards:

• Look at that armored hide.  IRL you’d have trouble putting a spear through that, no wonder the magic ones need diety-blessed swords and sige weapons to manage them.
• Hork down obscene amounts of meat, then nap for over half a year.
• TEEF
• Look at those eyes, those eyes are totally deciding whether you’re worth the effort of consuming.  So Draconic.
• Comes in magical white morph IRL already, and regular colors are Baller too.
• Is this animal somehow not cool and terrifying enough for you already?  Go look up crocodile ancestors and prepare to shit yourself, pathetic hairless beach ape. 
• Many crocodilians already dig burrows and take over caves near water. Would totally move into Erebor if given half a chance.