Creatures having eyelids blink always. They are - - -
1. Humans
Human blink an average 15 - 20 times per minute. This can also depend on light, concentration and emotions.
2. Birds
Birds blink less frequently due to lack of eyelids.
3. Reptiles
Reptiles too blink less frequently.
4. Fish
Fish blink differently than mammals.
5. Insects
Insects lack eyelids and blink differently from vertebrates.
6. Owls
Owls exhibit rapid and brief blinks.
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