But they, at least, had volunteered for this…. And in no time at all, hundreds upon hundreds of pairs of feet could be heard passing the tent, their owners talking excitedly, laughing, joking…… Harry felt as separate from the crowd as though they were a different species.
It was the end of the lesson; they had finished their work; the guinea fowl they had been changing into guinea pigs had been shut away in a large cage on Professor McGonagall’s desk (Neville’s still had feathers); they had copied down their homework from the blackboard ("Describe, with examples, the ways in which Transforming Spells must be adapted when performing Cross-Species Switches"}.
There are no more uses of "species" in the book.
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It is an endangered species.
It is thought that there are over 20,000 species of ants.