Alien: What are you doing?
Human, petting a cat: She’s sweet and sleepy, so I’m petting her.
Alien: But why is this other carnivore inside your home? Is it competing for territory?
Human: Lots of people have cats, they’re pets. But I mean, I’ve kind of accepted that she basically owns the place by now.
Alien: Does she serve any function for housekeeping? She seems too small the guard your home.
Human: Nah, she just naps all day mostly. She has been known to shred the furniture, though.
Alien: She provides no service and destroys your property and yet you allow her in your home anyway?! Why would y-
Cat: *starts purring and kneading paws*
Alien: *soft gasp*