Cheetahs

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. Cheetahs are faster than any other animal.
  2. Cheetahs are faster than any other animals.
    Which one is correct?
    Thanks.
2

‘… any other animal’ is usual, (any other type of animal), though neither is incorrect.

3

Beeesneees,

  1. Your opinion is more important than any other opinion.
  2. Your opinion is more important than any other opinions.
    Which one is correct?
    Thanks.
4

‘Opinion’ is uncountable when speaking about the beliefs or views of a group of people.
It is countable when speaking about the beliefs and thoughts of an individual.

Therefore, the answer is as above.

5

Balance would suggest either -

Cheetahs are faster than any other animals

A/the cheetah is faster than any other animal.