A coach uses a stick to provoke a lioness at the Sanaa Zoo in Yemen. | (REUTERS/Mohamed al-Sayaghi)

A pygmy chameleon at the Chester Zoo in Britain. | (Chester Zoo via REUTERS)

A commuter in Hong Kong. | (JEROME FAVRE/EPA-EFE/Shutterstock)

Figure skaters compete in Graz, Austria. | (TATYANA ZENKOVICH/EPA-EFE/Shutterstock)

Alexander Zverev competes in the Australian Open in Melbourne. | (MICHAEL DODGE/EPA-EFE/Shutterstock)

A hot air balloon before takeoff in Chateau-d'Oex, Switzerland. | (JEAN-CHRISTOPHE BOTT/EPA-EFE/Shutterstock)

A firefighting helicopter in Cape Town, South Africa. | (NIC BOTHMA/EPA-EFE/Shutterstock)

People walking on a frozen lake in Eastern Fribourg, Switzerland. | (ANTHONY ANEX/EPA-EFE/Shutterstock)

Trees casting shadows on a river in Tiszakeszi, Hungary. | (ZSOLT CZEGLEDI/EPA-EFE/Shutterstock)

Snow-covered mountains in Tyrawa Woloska, Poland. | (DAREK DELMANOWICZ/EPA-EFE/Shutterstock)

Snow plows prepare a ski slope near Sochi, Russia. | (YURI KOCHETKOV/EPA-EFE/Shutterstock)

Security force members march in New Delhi. | (REUTERS/Altaf Hussain)

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