The last straight-tusked elephants were the Dwarf elephant, which died out 8,000 years ago - possibly at the hands of human hunters and introduced predators.

The main threats include habitat degradation and introduced predators.

The island has never been inhabited by man nor had any introduced predators.

It became extinct in 1955, wiped out by storms and introduced predators.

It is threatened by habitat loss and introduced predators such as the small Asian mongoose.

Causes for its demise include habitat loss, introduced predators, and direct human harvesting.

The Hawaiian population is endangered due to habitat loss and probably also introduced predators.

It was so horribly easy to introduce predators on to the island by mistake, and the damage would be very serious.

Cat owners should be aware that domestic cats are introduced predators, and will usually kill all chameleons in the immediate area.

The main threats to the species are introduced mammalian predators, principally cats and rats.