Talk:Dragon/@comment-3121860-20190903022045/@comment-3121860-20190903151758

Actually I'm a biology nerd too. And I have thought a bit about it. Like I mentioned before Pigeons produce a milk like substance so do Discus Fish. Though Pigeons make it from their throats and Discus Fish secret it from their skin. We don't know everything about it. But there are things we know aren't really possible. Like a creature being the size of Godzilla, thats impossible. Its not possible for a creature to run at supersonic speeds. Its not possible to have telekinetic powers. I could go on for a while about the things I know are not possible due to my knowledge of biology.

But lets not forget that the natural world is full of bizarre creatures that have the most extraordinary weapons like the Bombadier Beetle. So theoritically a fire breathing creature possible, you just need a catalyst and fuel. So nonmammals could theoretically produce milk, those that do that we know of don't do it exactly the same way as mammals do but its not impossible, just extremely unlikely. http://www.bbc.com/earth/story/20151016-five-animals-you-never-knew-make-milk-for-their-babies.