An endangered eastern black baby rhino has been born, much to the delight of keepers, at Black Park Zoo Iowa, in the US
It's thought there are only one thousand black rhinos left in both captivity and the wild, which make this birth extra special.
They are hunted illegally for their horns made from ivory.
Some people in China and Vietnam believe the ivory can cure medical problems but that is not true.
The calf was happily feeding, standing and walking around, which is a good sign that it's healthy.
The black rhinoceros has two horns and can weigh up to 1,400 kgs, according to the International Rhino Foundation.