Wikipedia @lemmy.world Silverchase @sh.itjust.works 2w ago Odd-eyed cat en.wikipedia.org Odd-eyed cat - Wikipedia
People can have this too, it's called heterochromia.
Dogs too. My husky has heterochromia. Her left eye is blue and her right eye is brown.
If i recall correctly, most Huskys have heterochromia or it is at least extremely common among them.