Question: animals that have become extinct in the last 100 years?
Answer: Baiji dolphin. Year declared extinct: 2007. ... 
Thylacine, also known as 'Tasmanian wolf' or 'Tasmanian tiger' Year declared extinct: 1986. ... 
Pinta tortoise. Year declared extinct: 2012. ... 
Golden toad. Year declared extinct: 1989. ... 
Caribbean monk seal. Year declared extinct: 2008. ... 
Caspian tiger. ... 
Formosan clouded leopard. ... 
Pyrenean ibex.