The weirdest thing is probably their noises, and lack thereof.
90% of the time they don't make any sound, and when they have made noises I've only really heard three types, and they stopped doing one when they grew up.
As babies they would cry when lonely and it honestly sounded like a baby dinosaur, I wouldn't be surprised if ferret babies crying has been used for baby dinosaur sfx in movies and documentaries.
As adults, when they get really excited and playful, or get themselves hurt, they make a sound that sorta sounds like a chicken clucking mixed with a monkey. A sort of "ur-ur-ur-ur-ur" really fast. People describe it as laughing and it kinda fits except they've made it when they've gotten their claws stuck in things and panic.
Lastly they'll groan and squeak when they roll over while sleeping.>>27965
My darker colored one actually feels most comfortable when I bring him into the vet when he's held/positioned like a muffler. It's like his safe spot he retreats to, and always on my shoulders.