Mammoths: Ice Age Giants exhibition opens today
23 May 2014 Last updated at 07:09 BST
Hairy, huge and heavy; mammoths were the big mammals of the prehistoric era. And from today the Natural History Museum in London gives people a chance to get to see them in the flesh.
The museum is unveiling an amazing collection of mammals from sabre tooth cats, mastodons and giant cave bears.
But the star of the show has to be Lyuba, the world's best preserved baby mammoth, that roamed the Earth over 40,000 years ago.
Watch Ayshah's report when she takes a visit!