Physiologically is possible for an organic organism to spit and spew fire. Yes, it is possible and it is not a secret.
And it was all here once...It was before conversion of silicon to carbon.
I've seen similar ones that evolved from black snakes. They hatch in similar nests as birds do, only in bushes on the ground.
Mammals are always more merciful than those that hatch "elsewhere".
The "elsewhere" is usually unnatural and against nature, it is not created by love.

If you put matches in a child's hand, will get burned and usually set something on fire. 👇
And at the formation of "elsewhere" anything can be inserted into the DNA and passed on to future generations until the "defragmentation program" of the this territory/planet is set.