Dolphins and tiger cub

(AP Photo/Six Flags Discovery Kingdom, Nancy Chan)

In this photo provided by Six Flags Discovery Kingdom, Mavrick, a 14-month-old male Atlantic bottlenose dolphin, blows a mass of bubbles while checking out Akaasha, a six-month-old female Bengal tiger at Six Flags Discovery Kingdom in Vallejo, Calif. on Thursday, March 5, 2009. Park animal staff strolled by the dolphin exhibit as they escorted the tiger cubs on their daily walk around the park.