So here we have a pvp server where breaking and entering is allowed, but for someone who has, lets say a pet penguin, it can be pretty stupid when a mob thats able to hit you is unable to be hit via claim protection. And for someone who has taken advantage of this, it could make them pretty much untouchable even if you get inside their base. Its more of a exploit than anything once you have an army of unkillable devils guarding your home. In my opinion something needs to be done about this. Its not really fair (ironic considering your taking from them) to be mobbed by a dozen guards you can't kill. Should there be a way that allows these pets to be killed?
It doesnt even need to be in your claim. There is a dog who I saw sitting in the middle of the wild which I couldn't kill because it belonged to someone.