how many animals have been extinted and which ones are?

Question

back then were the dinosaurse, the mammoth, and so on,....but now these days....what animal have we extinted

Answer 1

Have a read of this site - it's the famous IUCN Red List of Threatened Species - and it explains a great deal about past extinctions, present extinctions and endangered animals -
http://www.iucnredlist.org/info/stats
http://www.iucnredlist.org/info/info_sources_quality
http://www.iucnredlist.org/info/programme
http://www.iucnredlist.org/info/introduction
http://www.iucnredlist.org/
http://www.iucn.org/themes/ssc/red_list_2004/English/newsrelease_EN.htm

Answer 2

Tasmanian Wolf, English Wolf, Quagga, Turanian Tiger, Steller's Sea Cow, Spectacled Cormorant, Dodo, Irish Deer, Cave Bear, Wooly Rhino, Giant Ground Sloth, Giant Dragonfly, etc.
Full list here:

Answer 3

Jersey pigs - Conestoga horses - Naragansett Pacer.
""FAO estimates that somewhere in the world at least one breed of traditional livestock dies out every week. Many traditional breeds have disappeared as farmers focus on new breeds of cattle, pigs, sheep, and chickens. Of the 3,831 breeds of cattle, water buffalo, goats, pigs, sheep, horses, and donkeys believed to have existed in this century, 16 percent have become extinct, and a further 15 percent are rare. Some 474 of extant livestock breeds can be regarded as rare. A further 617 have become extinct since 1892. Over 80 breeds of cattle are found in Africa, and some are being replaced by exotic breeds. These losses weaken the potential of breeding programs that could improve hardiness of livestock."

Why - Destruction of the native habitats of livestock breeds;
The development of genetically uniform livestock breeds;
Farmer and / or consumer preferences for certain varieties and breeds (and changes in these consumner preferences over time).
source: http://www.virtualcentre.org/in/dec/toolbox/indust/LossAgEA.htm

Answer 4

..what animals have become extinct in the last 100 years?

1) Ivory Billed Woodpecker ... maybe

Answer 5

the dodo bird and the tasmainin tiger

Answer 6

there is an inumerable amount. most of them we dont even know about. it is estimated that (I think) five undiscovered species perish daily.