I don't see why an intelligent alien species would have similar values to us. It would depend entirely on their social organization so unless they were the exact equivalent of us evolutionarily (omnivorous, sexually dimorphic, social, bipedal, terrestrial, etc.) they would value the lives, property, territory and status of their own kind and other animals very differently.

A race of aquatic arthropods could be mostly solitary, cannibalistic and regard age and size as primary dominance characteristics and their notion of property rights might depend entirely on whether they can eat the owner of said property, though sublimated through some complex set of social rules and protocols. Maybe the CEO of a company only has to offer a single leg to be eaten during a hostile takeover.