My desire to not hurt animals isn’t because they’re animals. Discriminating against non-human animals is just an arbitrary class like discrimimating on race, intelligence, or sexuality etc. It’s more reasonable to choose morally relevant principles like whether or not we should inflict suffering, death, or mass breed their species and propetually deny them of freedom because they can feel pain, they want to live, and they want to be free. There’s no trait that is specifically for humans and not for non-human animals and thus its arbitrary.