The budding trees signal that it is time for a couple of animals at the Denver Zoo to finally move outdoors. They are the lemurs and the bat-eared foxes.

Zookeepers recently filled the water moat around Lemur Island so the seven ring-tailed lemurs and single white-collared brown lemur can be out on the island during the days.

The primates can be seen climbing through the trees and sunning themselves.

Lemurs spend time both in the trees and on the ground. Lemurs are found only on the island of Madagascar and are threatened by habitat destruction and therefore listed as vulnerable.

Denver Zoo's two bat-eared foxes, Vinning and Hasstig, can be seen in their outdoor exhibit on the east side of the zoo near the camels.

Native to the African savanna, these foxes have adapted much smaller teeth than other members of the fox family to accommodate a diet that consists of 8 percent insects.

Another sign of spring at Denver Zoo is the upcoming hour change. Beginning April 1, zoo hours will be extended to 9 a.m. — 5 p.m., opening an hour earlier and staying open an hour later.