Some cool extinct animals images:
Image by Ariaski
Unfortunately this animal went extict in the 1930's. This poor guy, scientifically known as Thylacyne wasn't a tiger, actually a kind of wolf, however it was stripped like a tiger. Next time you get a Cascade beer, look at the tag, you'll see a Tassie Tiger.
Image by Travis S.
Camels were once happy grazers of North America during the Pleistocene. Unfortunately for them, around the early Holocene (10,000 years ago) the animals became extinct in the area. Questions as to why have plagued archaeologists for some time.
Although these camelids disappeared in North America, South America were able to hang onto their camelids which persisted to today in the form of Vicuñas and Guanacos.