Animal Owner vs. Animal Guardian:
No offense, and bless you all, but I am so damn tired of the whole PC thing, whether it's animals or people. No, they are not "property" and all that but instead of getting all hung on nomenclature, let's just education people, foster low or no cost spay-neuter and vacs clinics, help animals, raise awareness, be kind, teach kids, report and punish dog fighting rings etc etc. etc.
People get hung up on "correct" phraseology and then get all honked off if you say it wrong. How about just DOING good stuff instead of worrying about how in the hell you say it.
Besides, my cat OWNS me, he is not my Guardian!