Short answers, pulled from the story.
The earliest known fossils of the Hylidae family date back to the Cretaceous period, found in both India and Wyoming, proving these creatures have walked the earth for over 100 million years.
Despite the popular name tree frogs, the majority of species within this family do not live in trees at all. Many are strictly terrestrial or semiaquatic, challenging the assumption that their name defines their entire existence.
Genetic evidence suggests that the ancestors of the Australian tree frogs colonized that continent during the Eocene epoch via the Antarctic land bridge. At that time, Antarctica was not yet frozen over, allowing these amphibians to traverse the land bridge before the climate shifted and isolated the populations.
Most hylids display specific physical adaptations designed for an arboreal lifestyle, including forward-facing eyes that provide binocular vision and adhesive pads on their fingers and toes. These features allow them to climb and grip smooth surfaces with precision, a necessity for life among the branches.
The European tree frog, Hyla arborea, is common in the middle and south of Europe, with its range extending into Asia and North Africa.
The Hylidae family faces challenges in the modern world, with habitat loss and climate change threatening many of its species. The unique adaptations of these frogs, from the burrowing habits of Cyclorana to the arboreal climbing of Dryophytes, make them vulnerable to environmental changes.