Twin Siberian tiger cubs play during their first outing at a zoo in the Czech Republic in 2015.

Newly born twins Baturgai and Ormilia are presented at east Berlin’s zoological garden in 2010. 

Giant panda twins play in a Chinese research center in 2005. 

Male Peninsular pronghorn twins born at the Los Angeles Zoo are fed in 2009. Native to Baja California, they are one of the most endangered animals in Mexico. 

Fraternal twin lowland gorillas, one male and one female, born in 2004, are the grandchildren of a famous albino gorilla named Snowflake.

The first twin puggles (or platypus young) to be born captivity make their debut in Sydney in 2003.  

A female ring-tailed lemur named Susen carries her twin babies on her back in 2010 at a zoo in Germany. 

Twin 3-month-old Siberian tiger cubs at central Baghdad’s Al-Zawraa zoo get fed in 2009. 

Newborn twin hippopotami stand near their mother at the Emmen zoo in the Netherlands in 2008. According to a spokesman, the birth of such twins is “reasonably special.”

A polar bear named Cora gave birth to these twins at a zoo in the Czech Republic in 2012.

In 2005, snow leopard Samarra gave birth to these twins, one boy, one girl, at a zoo in Sydney, Australia.

These twin lemurs were born in an Israeli safari park in 2009. 

This golden-headed lion tamarin, shown in 2003 at a zoo in Brazil, has delivered at least three pairs of twins. 

A picture released in 2010 by Japanese animal theme park Adventure World shows newborn twin cubs of a giant panda named Rauhin.

These 8-week-old white lion twins were born at a zoo in Australia in 2006.

Year-old Andean bear twin brothers Tupa and Sonco climb a tree in a German zoo in 2014. 

A pair of northern lynx kittens prowl in a wildlife park in Scotland in 2012.