Like most moms, Mek needs a break. The mother of the four fast-growing Malayan tiger cubs at Fresno Chaffee Zoo has frayed nerves and needs some space. “You can tell Mek has had it,” says Lyn Myers, assistant curator for mammals at the zoo. “It’s like the end of summer, when kids have been home all the time, and mom wants school to come. They’re ready for them to go.” Born Jan. 5 at the zoo, the cubs are now 11 months old. They are in good health and are receiving training from zoo officials to become more independent. They...