As these instances make clear, the creature works tounderstandself andothers bymeans of interspecies contact: identification, taxonomy, andanalogy
I think this sentence would be the topic sentence of the paragraph, as it shows how the creature wants to understand himself and how he is different and similar to the rest of society. It gives an insight into what the rest of the paragraph is going to talk about, and it also gives us a idea of what the creature could be thinking.