Ezwal

The Ezwal are a sapient species inhabiting Carson's Planet. They have six legs, blue fur and they look like wild animals. Ezwal are natural telepaths, but are able to communicate via telepathy even with non-telepathic species.

After contact with humans, the Ezwal decided to pretend to be a non-sentient predator species, for fear of extinction by humanity if they were found to be intelligent. During the Human- Rull   war, two individuals were known to have co-operated with humans.

Culturally, they consider themselves non-conformists, even forgoing names, which, in their view, is unnecessary for a species that communicates via telepathy.
 * "Cooperate, or Else!", by A. E. van Vogt (1942)
 * "The Second Solution", by A. E. van Vogt (1942)
 * The War Against the Rull, by A. E. van Vogt (1959)