After a 5.2 magnitude earthquake struck Southern California, elephants at the San Diego Zoo reacted instinctively, forming what is known as an "alert circle" to protect their little ones.

When the ground started shaking, a herd of African elephants at the San Diego Zoo Safari Park formed a protective barrier, known as an "alert circle," around their youngest. Experts say it's a ...

Elephants at San Diego Zoo Safari Park formed an alert circle to protect their young as a magnitude 5.2 earthquake hit the region Monday morning.

Elephants at San Diego Zoo Safari Park formed an alert circle to protect their young as a magnitude 5.2 earthquake hit the region Monday morning.

During Monday’s 5.2 magnitude earthquake, African elephants at the San Diego Zoo Safari Park gathered together to protect their youngest, forming a circle and facing outward.. Elephants can hear ...