Even when you've kissed the morning nap goodbye, your toddler's likely to continue needing her afternoon nap for quite some time. At age 4, more than 50 percent of children are still taking naps. And even though the majority of children (about 70 percent) stop napping at 5 years, 3 in 10 still need a nap at this age.
That said, every child is different. Much depends on how many hours your toddler sleeps at night. Toddlers need approximately 12 to 14 hours of sleep in each 24-hour period. So if, for example, your child goes to bed at 8 p.m. and doesn't get up until 8 a.m., she may get her full quota of rest all at once, giving her no reason to need a nap. But if she doesn't get 12 hours at night, then ideally she should get some zzz's during the day. (more from Judith click here)