How do we know that? I'm not sure identity as we know it is required for intelligent life to develop. We know other mammals share it but they're pretty close to

How do we know that? I'm not sure identity as we know it is required for intelligent life to develop. We know other mammals share it but they're pretty close to us evolutionary speaking. Eusocial intelligence (ant-like) wouldn't need that, because they're not individuals, and each colony or group of colonies form one big organism. Could eusocial intelligence develop to the point of being capable of interstellar travel? It seems plausible under the right circumstances. Such an intelligence probably wouldn't understand the concept of individual identity...