Why do cats have vertical pupils?

to have sharper vision
to better see in the dark
to be more attractive
it is a useless mutation
The sharpest image is produced by round pupils, and if cats weren’t noc­tur­nal, they probably would have round pupils like us. But the vertical pupil, in com­bi­na­tion with hor­i­zon­tal eyelids, gives the cat greater and more accurate control in dif­fer­ent types of light­ing. A cat may adjust the amount of light by moving eyelids only.

Answers distribution

to have sharper vision
to better see in the dark
to be more attractive
it is a useless mutation
answers
flagUkraine
4%
86%
0%
8%
23
flagSweden
10%
84%
0%
5%
19
flagCanada
8%
83%
0%
7%
56
flagthe Netherlands
11%
83%
1%
0%
54
flagItaly
12%
77%
3%
6%
31
flagPoland
17%
76%
1%
3%
16387
flagRepublic of Ireland
21%
75%
2%
0%
37
flagthe United Arab Emirates
10%
75%
0%
5%
20
flagAustralia
19%
74%
3%
3%
31
flagNorway
14%
73%
5%
5%
34
flagGermany
20%
72%
0%
5%
183
flagthe United States
20%
71%
1%
4%
830
flagthe United Kingdom
20%
71%
0%
5%
430
flagUnknown
21%
70%
0%
4%
114
flagBelgium
26%
69%
0%
4%
23
flagFrance
24%
68%
0%
4%
41
flagSouth Africa
28%
66%
0%
4%
21
flagIndia
23%
65%
3%
4%
350
flagPakistan
25%
65%
2%
0%
35
flagthe Philippines
34%
59%
3%
0%
32

Gender

men77%
women80%
to have sharper vision
17%
15%
to better see in the dark
77%
80%
to be more attractive
0%
0%
it is a useless mutation
5%
3%

Language versions

question
answers
results
flag
Why do cats have vertical pupils?
1850
67%

Details

Author: globalquiz.org
Illustration: epSos.de
tools
Should this question be improved? Improve it.
Globalquiz questions are translated by users for other users. Translate this question.