First child of Linda and Arnold. Baby mouse-deer is born at Warsaw Zoo

The new arrival, who was born on December 2, is only around 10 centimetres tall, and its gender is not yet known, the zoo said. Warsaw Zoo got its first mouse-deer, Arnold, in 2020. He was joined by Linda in July. Zoo staff were pleasantly surprised by how little time it took the happy couple to have a baby, and two visitors to the zoo were also taken aback when the birth happened in front of them. Mouse-deer are among the smallest ungulates, or hooved mammals on the planet and even as adults weigh only 1.5-2.0 kilogrammes.