When the last living member of that species dies, the species become "extinct".
extinct
Many species become classified as endangered species when they are dying out.
extinct species
When every last one of that species dies and there is no more left to breed
If they are the last species of its kind it would be come extinct
When a species dies out completely, it becomes extinct.
Extinction. When a species fails to adapt, it dies out.
A species that dies out is said to be extinct. If this doesn't answer your question, please let me know.
Extinct
Extinction. The species goes extinct.
Extinction.
Extinction
extinction