A second polar bear cub has joined the Louisville Zoo's new arctic-themed exhibit, Glacier Run.
Siku, a 585-pound male cub, arrived Tuesday from the Toledo Zoo, but under standard operating procedure, he will be quarantined in a private den with an adjacent pool and play area for 30 days.
"Within 30 minutes of arriving, Siku was already in his private pool swimming," Louisville Zoo director John Walczak said in a news release. "He arrives at an exciting time for us with our recently opened bear habitat."
Siku, who is nearly 2 years old, joins a 7-month-old female cub, Qannik, who was brought to Louisville in late June, and an adult female polar bear, Arki.
There are only 79 polar bears at zoos in North America, according to the news release.
Eventually, the plan is to introduce Siku, who was born at the Toledo Zoo to parents Crystal and Marty, to Qannik, an orphan who was rescued from an Alaskan oil field.
However, their size difference means that won't happen right now; Qannik weighs only 125 pounds.
Moving Siku to Louisville was a key factor in Operation Snowflake, a collaboration that brought Qannik to the zoo, according to the news release. The Louisville Zoo will be able to meet the "physical and psychological needs of both cubs," the release states.
Qannik is owned by the U.S. Fish and Wildlife Service, which will make major decisions about her, including breeding.
"Being a wild-born bear, Qannik's offspring would add an important genetic diversity to the captive polar bear population," the news release said.
Siku's name means "ice" in the Iñupiaq language; Qannik's name means "snowflake."
Updates on the bears and admission information are available on the zoo's Web site, LouisvilleZoo.org.