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%
24%
63%
82
flagRomania
5%
26%
5%
63%
19
flagRepublic of Ireland
3%
19%
22%
54%
31
flagthe Netherlands
3%
20%
23%
53%
30
flagthe United States
8%
17%
20%
52%
634
flagCzech Republic
0%
23%
23%
52%
17
flagthe United Kingdom
6%
13%
27%
51%
279
flagSweden
15%
10%
26%
47%
19
flagthe Philippines
21%
18%
12%
45%
33
flagIndia
9%
22%
22%
44%
297
flagUnknown
8%
8%
40%
44%
25
flagPoland
12%
18%
26%
42%
19119
flagSwitzerland
26%
26%
5%
39%
91
flagGermany
24%
28%
7%
38%
682
flagPakistan
12%
22%
22%
38%
31
flagGreece
0%
28%
36%
36%
25
flagCanada
13%
22%
30%
33%
36
flagItaly
18%
22%
27%
31%
22
flagAustria
27%
36%
5%
30%
111
flagEgypt
23%
41%
11%
23%
17

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