Pets vs Minions scaling? (Death Knight)

Hello, I haven't played this game for some time, but I have a question that I remember I struggled to figure out.

I heard that your companion is classified as a pet if you have control over it... If not, it is classified as a minion...

And that's what I wanted to figure out and if Minions scale with your characters Agility, crit chance...
What is the Hunter ability that unleashes a snake trap? How do those scale?

DK Dancing Rune Weapon is likely classified as a minion or pet, and so are Blood Worms. Is why I am asking.