Sadly, no. They are all extinct and they have no close relatives.
there were never any
Tigers aren't native to NZ, any found would be in zoos and similar.
The white tigers are bengals, not siberians, and none are currently in the wild. All are in captivity.
In the zoo or in the south eastern corner of Russia if there are any left in the wild.
Officially, none. There have been no confirmed sightings of the Thylacine, or Tasmanian Tiger, since the last one died in Hobart Zoo in September 1936.
Yes
I think there are some authentic dinosaur eggs left in the world.
No. And since it's not recognized as a separate specie - only a rare variation of the "regular" tiger - even if there wouldn't be any currently alive they still wouldn't be exctinct. As long as there are enough "regular" tigers left, we'd still get White tigers every now and then.
No, all tigers are carnivores.
White tigers do not have horns.
Very rarely. Tigers aren't native to Africa, their natural habitat is Asia. You'd only find tigers in Africa in zoos and private Collections. If they get the chance, they'd do it just as they would at any other Place in the World.
NO, Tigers worry to much about killing