Newer inmates report having a difficult time making friends.

SAN DIEGO—Plagued by a lack of funding and growing staff shortages, the San Diego Zoo and Ironwood State Prison were combined earlier this week, bringing local inmates and wildlife together for the first time under the same roof.

The new state-of-the-art facility—which will house 12 separate cell blocks, a reptile house, two weight rooms, and a primate sanctuary—is expected to save the state of California up to $5 million in operation costs over the next year.

"It is with great pride that I announce the opening of the San Diego Maximum Security Zoological & Convict Reserve," director David Hennessey said at an opening ceremony Tuesday. "From southern white rhinos to repeat offenders serving 20 years for drug trafficking—you'll find them all here at our amazing new facility."