I didn't think any change would be enough. Isn't morality subjunctively objective?

That doesn't preclude self reference. (sp. subjectively)

And my current values say that if it's a human or an endangered wolf, I'd save the human.

Does this apply in the extreme case? That is, species vs individual?

If I had a single use switch that could be used to either save the wolf species or save an individual human I'd flick it to 'wolf species'. The only reason I would even consider the other option is because humans lose their grip on perspective when it comes to morality - it is sometimes necessary to signal to them.