
A snake is seen at the Exotic Zoo in Warsaw, Poland on Dec. 2, 2018. The Exotic Zoo is a one-day event where people can see, touch and buy exotic reptiles, insects, amphibians and arthropods. The exhibition attracted hundreds of visitors on Sunday. (Xinhua/Jaap Arriens)

Snakes are seen at the Exotic Zoo in Warsaw, Poland on Dec. 2, 2018. The Exotic Zoo is a one-day event where people can see, touch and buy exotic reptiles, insects, amphibians and arthropods. The exhibition attracted hundreds of visitors on Sunday. (Xinhua/Jaap Arriens)

A visitor touches a giant snail at the Exotic Zoo in Warsaw, Poland on Dec. 2, 2018. The Exotic Zoo is a one-day event where people can see, touch and buy exotic reptiles, insects, amphibians and arthropods. The exhibition attracted hundreds of visitors on Sunday. (Xinhua/Jaap Arriens)

A child holds an insect on his hand at the Exotic Zoo in Warsaw, Poland on Dec. 2, 2018. The Exotic Zoo is a one-day event where people can see, touch and buy exotic reptiles, insects, amphibians and arthropods. The exhibition attracted hundreds of visitors on Sunday. (Xinhua/Jaap Arriens)

A visitor holds a snake on his hand at the Exotic Zoo in Warsaw, Poland on Dec. 2, 2018. The Exotic Zoo is a one-day event where people can see, touch and buy exotic reptiles, insects, amphibians and arthropods. The exhibition attracted hundreds of visitors on Sunday. (Xinhua/Jaap Arriens)

Scorpions are seen at the Exotic Zoo in Warsaw, Poland on Dec. 2, 2018. The Exotic Zoo is a one-day event where people can see, touch and buy exotic reptiles, insects, amphibians and arthropods. The exhibition attracted hundreds of visitors on Sunday. (Xinhua/Jaap Arriens)