A "sapient" non-human animal would be limited by their lack of aposeable thumbs, creation of tools, therefore unable to organize labor.
A sapient brain is a massive investment. In humans, the brain is roughly 2% of our body mass but consumes 20% of our energy. If a sapient wolf cannot build a trap, a spear, or a fence, its "intelligence" doesn't actually help it catch more meat than a "dumb" wolf. It has a higher energy "tax" with no way to pay it back.
Most animals have "natural instincts" that are either solitary (tigers) or based on simple hierarchy (wolves). Humans used their brains to create socially necessary labor. We can agree on a plan to hunt a mammoth, store the fat, and trade the hides. A sapient animal without the ability to "build" a society through physical labor remains a prisoner of its instincts.
In a state of nature, efficiency wins. A non human animal with sapience inefficient.
https://www.marxists.org/archive/marx/works/1876/part-played-labour/index.htm