PHOTOS: Cheetah cubs at San Diego Zoo

SAN DIEGO, Calif. -- The San Diego Zoo Safari Park is showing off its newest cheetah cubs.

The female cubs were born Sept. 1 and are receiving around-the-clock care and bottle feedings. The cubs' mother has been unsuccessful at raising litters in the past, so the staff decided to raise the cubs.

The nearly 3-week-old cheetah cubs weigh about 3 pounds each. Zoo officials say the cubs are developing rapidly. The staff also says the two have playful personalities, and were already swatting at each other when they were just a few days old.