"Are those old animals?"
Translation:To jsou stará zvířata?
Why not "Ony jsou stará zvířata?" or "Jsou ony stará zvířata?"? Doesn't zvíře become feminine when it goes to plural?
No, it does not. I know only one word that goes from neuter to feminine in plural - dítě.
That is correct I found out since and commented so elsewhere. I do not think such an omission warrants a downvote though...
For "those animals" yes, that would be "ta zvířata".
But this is the so common "to je/to jsou/je to/jsou to" pattern "that is/those are". We have the same question almost every day.