#9 of 13 Most Popular Galleries of 2013: 3 little liligers cavort at Russian zoo

The zoo in Novosibirsk, Russia's third-largest city, is home to a unique animal — the liliger. That's a big cat breed where the father is a lion and the mother is a lion-tiger hybrid, called a liger. (AP)

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In this Tuesday, June18, 2013 photo, a month-old liliger cub walks in Novosibirsk Zoo. The cub's mother is Zita, a liger - half-lioness, half-tiger, and father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June 18, 2013 photo, Zita, a liger - half-lioness, half-tiger - carries her one month-old liliger cub in the Novosibirsk Zoo. The cub's father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June 18, 2013 photo Zita, a liger, half-lioness, half-tiger, licks her one month old liliger cub in the Novosibirsk Zoo. The cub's father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June18, 2013 photo a lion Sam walks in Novosibirsk Zoo. Zita, a liger, half-lioness, half-tiger, and the lion, Sam are a pair, which gave birth to liliger cubs. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June 18, 2013 photo Zita, a liger, half-lioness, half-tiger stands with her one month old liliger cub in the Novosibirsk Zoo. The cub's father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June18, 2013 photo Zita, a liger, half-lioness, half-tiger, licks her one month old liliger cub in the Novosibirsk Zoo. The cub's father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June 18, 2013 photo, a month-old liliger cub walks in Novosibirsk Zoo. The cub's mother is Zita, a liger - half-lioness, half-tiger, and its father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June 18, 2013 photo Zita, a liger, half-lioness, half-tiger, carries her one month old liliger cub in the Novosibirsk Zoo. The cub's father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June 18, 2013 photo, a month-old liliger cubs walk in Novosibirsk Zoo. The cubs' mother is Zita, a liger - half-lioness, half-tiger, and their father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June 18, 2013 photo Zita, a liger - half-lioness, half-tiger - watches her one month old liliger cub in the Novosibirsk Zoo. The cub's father is a lion, Sam. (AP Photo /Ilnar Salakhiev)