What commandment emphasizes equality among all animals?

The commandment that emphasizes equality among all animals is indeed Commandment #1, which states, "All animals are equal." This foundational principle of Animalism highlights the idea that every animal on the farm, regardless of their species or role, should be treated with uniform respect and dignity. It serves as a rallying point for the animals, promoting the notion that they all share the same rights and should stand together against oppression from humans.

While other commandments might touch on related themes, Commandment #1 is specifically focused on the core value of equality that is central to the revolution on the farm. The subsequent commandments in George Orwell's narrative reflect how this ideal can be distorted or manipulated by those in power, ultimately leading to the very inequality the rebellion sought to eliminate.