Siberian Tiger
Only 500 of these massive tigers are thought to be alive today. Experts have also placed these tigers on the critically endangered list because they have been hunted to extinction. These are the biggest cats on the planet, so it will be a massive loss should they die out completely.
Black Rhino
The black rhino is among the oldest mammal groups on the planet. Three of the sub-species of this group have already become extinct due to poaching. Just under 5,000 are left but these are dwindling rapidly because rhino horns are in demand as they are believed to contain medicinal properties.