Noah's Ark is for our babies and children up through age 3. 

Koalas - For Babies
Turtles - For Crawlers
Giraffes - For Walkers
Lions - Age 2 
(Must be 2 years old by Sept, 1, 2012)
Monkeys- Age 3
(Must be 3 years old by Sept. 1, 2012)