Audubon Zoo membership price hike stirs debate

The Audubon Nature Institute is fielding frustration for price increases on its memberships.

By the numbers: A family membership for two adults and two kids now costs $425.

• That membership was priced at $219.95 about two months ago, according to an archived version of the zoo's website.

Zoo officials say the price increase reflects "economic realities" and will "enhance the Membership experiences." Full statement.

Meanwhile: The zoo's adorable new lion cubs finally have names — Nandi and Zawadi for the girls and Tatu for the boy. What the names mean.