It is just natural behavior, but it could also be resting.
A treefrog with gray eyes.
gray tree frog
Tree frogs make up the family Hylidae. The gray tree frog is classified as Hyla versicolor, the Pacific tree frog as Hyla regilla, and the giant tree frog as Litoria infrafrenata.
They will all eat spiders.
His name is Carl.
Some do. The gray tree frog is the only one that I know of.
Depends on what species you are asking about and where you live. There is the Austrailian green tree frog, American green tree frog, American gray tree frog. Anytime it is warm out is when you can find them. Usually mating between April and August.
Normally they get as big as your hand.
a grey bellied tree frog
a tree frog
A tree frog is considered an animal in any part of the world. If you mean that if it inhabits Haiti then I do not know.
There are some varieties of frogs and toads which live in the desert. In the Australian desert, these include:Knife-footed frog - Cyclorana cultripesDaly Waters Frog - Cyclorana maculosaMain's Frog - Cyclorana mainiWater-holding Frog - Cyclorana platycephalaCentralian Tree Frog - Litoria gilleniGreen Tree Frog - Litoria caerulea (also found along the eastern coast)Desert Tree Frog - Litoria rubellaDesert Froglet - Crinia deserticolaNorthern Burrowing Frog - Neobatrachus aquiloniusDesert Trilling Frog - Neobatrachus centralisShoemaker Frog - Neobatrachus sutorDesert Spadefoot Toad - Notaden nichollsiSpencer's Burrowing Frog - Opisthodon spenceriTanami Toadlet - Uperoleia micromelesBlacksoil Toadlet - Uperoleia trachyderma