This time of year, the sound of a wolf howl piercing the night can really send shivers up your spine. But that call of the wild isn’t meant to scare you; it’s actually a message to other wolves.

Wolves Weekend is a celebration of the IMAX film Lost Wolves of Yellowstone.

California has a growing number of gray wolves howling in the wild and have been tracked for more than a dozen years. Gray wolves are native to California, but starting in the mid-19th century, ...