Final answer:
The question is about reflexive pronouns in English grammar for a Biology subject in High School.
Step-by-step explanation:
The subject of the question is Biology.
This question is about the different types of pronouns used in English grammar. In this case, the pronoun 'themselves' is used to refer to 'some animals.' Specifically, it is an example of a reflexive pronoun. A reflexive pronoun reflects the action of the verb back to the subject of a sentence.
Other examples of reflexive pronouns include: 'myself,' 'yourself,' and 'himself.'
Learn more about Reflexive pronouns in English grammar