I recently got a pet snake, but my wife hates it because it's legless and carnivorous. 
There are a lot of different kinds of snakes. I know the black snake isn't supposed to be venomous.
Normal black snakes aren't bad, but the red-bellied black snake is and causes significant morbidity. I like to live dangerously.
Yes you do. Their organs are situated one in front of the other instead of side by side due to their narrow bodies.
I got my red-bellied from a friend who brought it back from eastern Australia. Don't tell anyone, though. It is less than legal.
Okay. Snakes are thought to have evolved from either burrowing or aquatic lizards, maybe during the Jurassi.c period
I would never own a lizard though. They look boring and they're so many different kinds. There are over 6,000 types all over the world.
Most snakes are nonvenomous and the ones that are use it to mostly kill prey rather than for self defense.