Perhaps it's the quest for the Soul of Animals that we're after in our persistent attempts to give them our rights. What we 'name' we can consider 'conquered' and 'ours'. We want to 'right' the wrong of Animal cruelty and abuse yet giving them our rights when so many of us don't have equity in those rights, is a non-starter for them. Best to stick to Animalhood which they heartily embrace.
Thanks for listening! the Animals say "Together we are One."