"a cat and a dog" vs "cats and dogs"

[Sitifan]

1. A cat and a dog are often enemies.
2. Cats and dogs are often enemies.
I think #2 is correct. Is #1 also acceptable?
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Thank you very much for your reply.

[Skrej]

I think both are correct and acceptable. I might have a slight preference for #2, since it's a bit more concise, but there's nothing wrong with #1.
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[Lost_Soul]

Hi, Skrej

What about this one:

The cat and the dog are natural enemies

Will it work? (I want to refer to a certain species of animals using the definite article the. I don't mean to use the to refer to a certain animal)

Thanks !

[Molly]

All three are grammatically correct.

[Lost_Soul]