Authoritarian utilitarianism and anti authoritarianism are concepts often at odds. So often removals of freedom or hierarchies are justified by doing something from a utilitarian standpoint good.

For me I think the only good way to have pets is to let them do whatever they want. If I where to have a pet I would have to live pretty secluded so they could just run around and do whatever. Often times the stray dynamic is good. Have a way for them to come inside and leave anytime they want and maybe feed them. The pets relationship can be terminated at any time and their interactions with u r always their choice.

Now a while ago I posed an interesting question that no one really answered to my satisfaction. Is it okay to kill species which are invasive. For example house cats in my area elimate many species and absolutely destroy local ecosystem. At my uncle's farm people dump strays there constantly. They reproduce incredibly fast so there has gotten up to like 100 strays. And over the years they have decimated most of the life on like 100+ acres. So there is a question to be asked from a self preservation standpoint having animals just kill everything until the local ecosystem collapses and the said invasive species starves unless artificially propped up is bad. Would killing the animals be something even vegan or anarchist? I'm still not sure. Tho in the scenario it's irrelevant how much kill as it's a discussion about how they do kill.

Now I'm also extremely against controlling behavior that limits freedom. Now I would say I'm against the possession of living things but u would be enabling of hobby killing potentially endangered species for sport. So I guess if I where u I would give myself two options. Either kill the cat, have it live somewhere it can't kill living room things while not being restricted or just let the cat live it's life and own the harm u cause.

The authoritarian urge to restrict living things and control them for utilitarian purposes is something I am vehemently against. Now sure it would be for preservation of life but I mostly am only pro disencouragment of violence, avoidance or killing. I don't want to live in a world where people try to restrict others autonomy and rob them of freedom so I don't consider it an option as I'm so against it.

If I where u I would be pretty confident I would just let the cat do what it wants and .make it's own harmful decisions. Prob think about how I've come closer to bug game hunters that I would think. And maybe gain some empathy for how it's more understandable why people would do such a thing. I treating question tho I disagree with the premise that trying to control the pet would something to do or the ownership philosophy that u are responsible for a pets decision and u aren't. (well if u massively control a living thing u are but if u let it live it's life like u say u do then the pets decisions r its own.)