Emery, the Virginia Zoo's 3-month-old lion cub, has a few development abnormalities.

Two lion cubs are out and about at the Phoenix Zoo. The 4-month-old brothers made their "Predator Passage" habitat debut this weekend, according to a Phoenix Zoo Facebook post .

The six-week-old lion cub explores its enclosure inside the Denver Zoo. ... The gestation period for a lion is around three months, and lions can have litters of one to five cubs.

Two lion cubs are out and about at the Phoenix Zoo. The 4-month-old brothers made their "Predator Passage" habitat debut this weekend, according to a Phoenix Zoo Facebook post.