questionedithistorytranslations

Which part of a dog's or a cat's eye reflects the light?

conjuctiva
pupil
iris
a layer behind retina
Many vertebrates, especially nocturnal ones, have the reflecting layer called the tapetum lucidum. It reflects the light back through the retina, increasing the amount of light available to the photoreceptors.
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Answers by country

conjuctiva
pupil
iris
a layer behind retina
answers
flagAustralia
3%
8%
25%
62%
83
flagRomania
5%
30%
5%
60%
20
flagFrance
17%
11%
11%
58%
17
flagthe United States
8%
16%
19%
54%
663
flagRepublic of Ireland
3%
19%
22%
54%
31
flagthe United Kingdom
6%
13%
27%
51%
286
flagCzech Republic
0%
27%
22%
50%
18
flagthe Netherlands
3%
21%
27%
48%
33
flagSweden
15%
10%
26%
47%
19
flagthe Philippines
21%
18%
12%
45%
33
flagIndia
9%
22%
22%
44%
301
flagUnknown
8%
8%
40%
44%
25
flagPoland
12%
18%
26%
42%
19314
flagSwitzerland
25%
25%
5%
42%
95
flagGermany
23%
27%
7%
39%
731
flagPakistan
12%
22%
22%
38%
31
flagCanada
13%
22%
30%
33%
36
flagGreece
0%
26%
40%
33%
30
flagItaly
18%
22%
27%
31%
22
flagAustria
27%
36%
5%
30%
111

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