a kind of animal or a kind of animals
Should I say tigers are a kind of animal or a kind of animals?

Question

Answer

"Tigers are a kind of animal" is correct

Answer

tigers are a kind of animal ..

Answer

"Tigers are a kind of animal."
Not animals

Pretty sure the pattern is always: X is/are a kind of (Y singular)

Penguins are a kind of bird.
Wolves are a kind of predator.
Whales are a kind of mammal.

Answer

Tigers are a kind of animal. Kinda hard to explain but in this case animal is not plural because a tiger is one type of animal not multiple animals. So tiger can be plural because you are talking about tigers generally.

Correct me if i am wrong but as native speaker the second option doesn't sound correct.

Source: Native Speaker

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