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In the English language, what are the right terms for a female wolf and a female owl; perhaps "she wolf" and "owl hen"?

Are there distinct or separate words in English used for feminine? I checked in Wikipedia +other websites but found only "she-wolf" and "owl-hen".

You used to have wolfess, now an archaic term. She-wolf or female wolf are the terms commonly used:

Wolfess, the medieval term for a she-wolf, is now rarely used in Present Day English except to mean a woman that is sexually aggressive.

(Studies in Linguistic Variation and Change: From Old to Middle English)

Female owl is the more common term as far as owl is concerned; “hen owl” appears to be a more informal expression.

The problem with the words you are looking for (as seen with the answer bitch for a female dog) is that the words you are looking for are normally assigned to husbanded animals.

Chicken / rooster, cow / bull, mare / stallion, etc.

Edit: I disagree with the words tigress and lioness being included in this gendered description because they are essentially violations of the OP's premise that shewolf and hen owl are not satisfactory. Adding a generic 'ess' is the equivalent of saying 'female of'