Pair of Arctic wolf cubs the first born at a Japanese zoo

Two Arctic wolf cubs were born at a zoo of Tochigi Prefecture, Tokyo in last month. It's first time the animals have been successfully bred at a Japanese zoo. Nasu Animal Kingdom said the cubs, one male and the other female, were born on 16th May. They measured about 20 centimeters long.

The male weighed about 1,500 grams and the female around 1,350 grams some two weeks later. The zoo added that the male cub had grown to about 3,900 grams and the female to around 3,000 grams by Saturday. The zoo plans to allow visitors to see the cubs late next month.