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October 26, 2011

Ask MoFi: Are there any mammals other than cats that have vertical pupils? Goats have horizontally slitted pupils, which is bizarre and creepy. Cuttlefish have W-shaped pupils. But I haven't been able to find a picture of a vertical pupil in any mammal other than cats. A random person on the Internet claims that some monkeys have vertical pupils, but I've been unable to find proof.