"Твоя кошка пьёт из моей чашки."

You don't know the whole truth dude, actually you drink from its cup )

I let my cats stick their noses in my water bottles. It's very cute.

In what form is чашки here? I am having difficulty understanding the conjugation in this case.

I put "Your cat is drinking from my cup" Should this be accepted?

Happens everytime...

Drinks what, exactly?

No fair!