No, although there has been a noticeable decline in numbers, they are nowhere near extinct.
If the numbers of a species begin to decline dramatically, the species becomes known as an "endangered" species. When the numbers decline so far that the species no longer exists, the species is known to be "extinct."
Mainly by persecution by man. But is it really extinct? Recent evidence shows it may be a race of the Siberian tiger, as nearly all genetic codes of the two are identical.
Dead as a Dodo:They were first discovered in 1581 and were extinct by 1688 so make it three centuries.
The hyenadon became extinct during the start of the Oligocene. There was a mas extinction event that was called Grande Coupure and causes temperatures to decline and killed many species of animals.
No, but the decline of bamboo has caused their habitat to severely dwindle, and they are now near extinct.
The African skimmer is listed as "Near Threatened", not endangered. The decline in population seems to have been arrested now, and there is some resurgance in population. Habitat loss caused the initial decline.
No, they are completely idiotic.
Same as today, but more than this- can add the extinct species of last twenty five centuries
Conservation threats to the cougar include being hunted and killed due to persecution as a pest animal, loss of habitat, and depletion of their prey species.
Became extinct about 1.5 million years ago. Reasons for this are thought to be the cooling of the oceans on a global scale and a decline in the supply of food
Archaefructus plants likely went extinct due to changing environmental conditions, such as climate change or competition from other plant species. Their specialized ecosystem may have been disrupted, leading to their decline and eventual extinction.