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Several mods are available to automate these basic tasks, Achtung, AllowDeadMansApparel, Rimworld Search Agency are one of them, these can reduce the need for constant management of pawns.
Keep in mind no mod can completely eliminate the need for player input manually some degree of manual management always will be needed to survival of your colony.

Thanks

If the "Bloodfeed" ability is defined to only target humans in its "verbProperties" section, then your patch code won't be enough to make it work on animals.. You would need to modify the "verbProperties" section as well to include animals as target..