Mez's Magic (The Lost Rainforest, Bk. 1)

The magical rainforest of Calder has forever been divided into the animals who walk by night and those who walk by day. Then Mez, a young nightwalker panther, discovers that she can enter the daylight world, and she rushes to discover what it means to cross the Veil - and the extend of her newly uncovered magical powers.

But a reawakened evil threatens everything Mez has ever known. No, with an unlikely group of animal friends - including a courageous bat, a scholarly tree frog, and an anxious monkey - Mez must unravel an ancient mystery and face her greatest fears if they are to have any hope of saving their endangered rainforest home.