Three of seven lion cubs born to two sisters in August and September

Three of seven lion cubs born to two sisters in August and September plays with one of the females at the National Zoo in Washington on December 18, 2010 as they make their debut at the zoo. Both litters were fathered by Luke, the zoo's sole male lion until the birth of the cubs, who are the first to be born at the zoo in more than 20 years.



Luke, who fathered seven cubs who were born to two sisters in August and September 2010, sits in his enclosure at the National Zoo in Washington on December 18, 2010, before the cubs make their debut at the zoo. Luke was the zoo's sole male lion until the birth of the cubs, who are the first to be born at the zoo in more than 20 years.



One of seven lion cubs born to two sisters in August and September plays with one of the females at the National Zoo in Washington on December 18, 2010 as they make their debut at the zoo. Both litters were fathered by Luke, the zoo's sole male lion until the birth of the cubs, who are the first to be born at the zoo in more than 20 years.



Five of seven lion cubs born to two sisters in August and September play in their enclosure at the National Zoo in Washington on December 18, 2010 as they make their debut at the zoo. Both litters were fathered by Luke, the zoo's sole male lion until the birth of the cubs, who are the first to be born at the zoo in more than 20 years.



Two of seven lion cubs born to two sisters in August and September play in their enclosure at the National Zoo in Washington on December 18, 2010 as they make their debut at the zoo. Both litters were fathered by Luke, the zoo's sole male lion until the birth of the cubs, who are the first to be born at the zoo in more than 20 years.



Two of seven lion cubs born to two sisters in August and September play in their enclosure at the National Zoo in Washington on December 18, 2010 as they make their debut at the zoo. Both litters were fathered by Luke, the zoo's sole male lion until the birth of the cubs, who are the first to be born at the zoo in more than 20 years.



Two of seven lion cubs born to two sisters in August and September stay close to one of the females at the National Zoo in Washington on December 18, 2010 as they make their debut at the zoo. Both litters were fathered by Luke, the zoo's sole male lion until the birth of the cubs, who are the first to be born at the zoo in more than 20 years.



Three of seven lion cubs born to two sisters in August and September play close to one of the females at the National Zoo in Washington on December 18, 2010 as they make their debut at the zoo. Both litters were fathered by Luke, the zoo's sole male lion until the birth of the cubs, who are the first to be born at the zoo in more than 20 years.



Two of seven lion cubs born to two sisters in August and September play in their enclosure at the National Zoo in Washington on December 18, 2010 as they make their debut at the zoo. Both litters were fathered by Luke, the zoo's sole male lion until the birth of the cubs, who are the first to be born at the zoo in more than 20 years.

source: Dailymail
photo: Gettyimages