The degree of ‘compassion’ one has toward an animal is not directly correlated to one’s opinions as to its intelligence.

My uncle raised pigs. A frequent topic of conversation was how smart they are. Without question, they’re smarter than dogs. (I had a pet pig growing up.)

Yet, we ate then.

An even more brutal example: slavery. It was obvious and undeniable that human slaves were intelligent; yet, that didn’t mean that compassion towards them was common.