Polar bears know how to have a good time.
Birthdays are always a cause for celebration, but even more so if it's the first birthday of adorable polar bear twins Nela and Nobby, who live at the Tierpark Hellabrynn zoo in Munich.
Their mother Giovanna was supposed to be keeping an eye on things in case the cubs got out of hand, but seeing the traffic cones that the keepers had given as presents was clearly too overwhelming.
Nela and Nobby became famous when they made headlines for being thought to be the first polar bear cubs to be caught on camera during birth. Seven-year-old polar bear Giovanna gave birth to her twins in the birthing den at the Hellabrunn Zoo in Munich, Germany. They were the only polar bear cubs to be born in captivity in Europe in 2013.