DENVER (CBS4) - The Denver Zoo celebrated Joona the rhino's first birthday on Monday, but her mom wasn't as excited at first. The greater one-horned rhino had to wait a minute before she was ...

Recently introduced to her outdoor habitat at the Denver Zoo, Joona is burning her child-like energy by running literal circles around her mom, taking mud baths, and indulging in snacks.

Tensing and Joona at the Denver Zoo, June 16, 2020. (credit: Evan Semón Photography) The zoo closed on March 17 because of the coronavirus pandemic and reopened to the public early this month.