The last time we had a tortie in the family was about 30 years ago. She was vocal but meowed like normal cats. Hildebeest isn't a normal cat. The only time she meows is when she wants food. The rest of her vocal repertoire is definitely not catlike. Makes me wonder what her life was like and what she lived with before she joined our family. Because...
She goes, "Raun raun raun" in a descending scale when she bites herself.
When she walks up to my side in bed at night she says, "Ngach."
Her growl is very low, a bass-baritone, that then climbs to a tenor and finishes in a hiss. Reminds me of that vocal lesson skit on "Frasier."
When very content, as she is now lying on the desk leaf, she purrs and hums at the same time. Well, not really a hum, a kind of chant, but very nasal. Like a throatsinger.
She'll reach out and lightly touch you when she wants to be petted. This will often be accompanied by a short, high pitched, "Meh."
If you scratch her in just the right spot, she closes her eyes and says, "Ngo, go, go."
I've no idea what language she's speaking. Perhaps it's a lost tongue of an ancient alien species, perhaps it's a dialect of a modern language. But I've never heard it before.
Notes regarding Heroes and movies.
2 hours ago