The tiger is in danger of becoming extinct.
Tigers are in danger of becoming extinct.
A tiger is in danger of becoming extinct. This issue is about the generic use of articles and the differences between definite and indefinite, singular and plural subjects. Thank you in advance Monica. It's certainly true that the three kinds of generic noun phrase are often different, in use and occasionally in sense, besides being different in form. Let's give them some names, so we can talk about them.