Lions are technically considered extinct in Chad's Sena Oura National Park, a protected area of about 182,000 acres that's adjacent to Cameroon's much larger Bouba N'djida National Park, where the big cats "are now increasing and appear to be recolonizing parts of their former range including Sena Oura," according to the WCS. Lions are technically considered extinct in Chad's Sena Oura National Park, a protected area of about 182,000 acres that's adjacent to Cameroon's much larger Bouba N'djida National Park, where the big cats \"are now increasing and appear to be recolonizing parts of their former range including Sena Oura,\" according to the WCS. Lions are technically considered extinct in Chad's Sena Oura National Park, a protected area of about 182,000 acres that's adjacent to Cameroon's much larger Bouba N'djida National Park, where the big cats \"are now increasing and appear to be recolonizing parts of their former range including Sena Oura,\" according to the WCS