Pets vs Slaves

[Vashii]

I'm interested to know what the community's view on Pets is. From the bit that I can find, Pets are not really a recognized class or subclass. I'm curious as to why this is? (unless I've been misinformed) Pets, in my mind, seem to play a very different role and have a somewhat different set of rules than slaves.
I know personally that I treat my pet in a very different manner that I would a slave. He isn't a "pet-play" pet- I don't dress him up as an animal; He is a human pet, though he doesn't do housework and he does curl up in my lap and purrs when petted. He is disciplined- quite harshly when the need calls for it.
So, rambling nonsense aside, I'll reiterate my question. What is the view on "pets," human or petplay? And why?

[CuddleDom]

Yes human pets are a type of slave but not all slaves are pets.
I have no idea about "official" terms but in my view, To me it is a service slave that would do the housework and want to have clear rules to follow. While a pet slave is more playful (rather than bratty), by that I mean follows rules but will act out to get attention.