A wild beaver like a few miles from my house, and not a nutria, a real life flat-tailed beaver toothed fucking beaver. I was going to an artificial dam I use as a fishing spot and there he was. It was way bigger than I thought but I didn’t want to disturb it so I turned around and went home.
In captivity? An Okapi? A rhino? Idk man I’ve been to many zoos and exotic zoos where you drive through and idk about the rarest.
Probably a Takahē in New Zealand but in captivity.
Panay monitor lizard.
My buddy was trapping monitor lizards for us to eat and we caught one of those. He recognized it and told me that they were endangered.
We did NOT eat it. It went back into the forest, unharmed.
Wolverine.
I saw a lynx cat in th3 backyard of a place I was staying at in Washington it was very cool.
Well that need the disclaimers of “outside a zoo” and “of which i was aware of”, but probably Hummingbird hawk-moth, it might not be very rare, but i was like “wtf a hummingbird in Poland?” and i managed to get close enough to see it’s in fact a moth.
In the wild: Florida scrub jay. key deer. carracarra. Indigo racer. I don’t know how to determine what is rarest. There are a lot I have seen.
Outside of a zoo, maybe American Avocet or Painted Bunting
Tarsier
About a year ago my wife and I did a zoo date and when we got out of the car there was this bird walking around the parking lot. Not sure what kind of bird, flew off after like a minute but I thought it looked really cool.