Freedom is not a universal human concept. Most non western languages do not have a word for freedom. Zooplantman is correct o this mater. Birth,death,páin,suffering,body are universal human concepts but freedom is not. I am an anthropologist and i know this. Passing to animals the Notion of freedom is rather antropocentic.
This is interesting. So, is it ethical to restrict the liberty of individuals if their culture has no concept of freedom? Isn't that the same question I'm asking about animals?