European tree frog

They are carnivorous.

An excerpt from the article 16 facts about European tree frog

They hunt mainly arthropods. Their prey is usually spiders, flies, beetles, butterflies, and caterpillars. They catch many of their prey in flight, so flying insects make up most of their diet. They hunt from concealment, remaining motionless and waiting for a good opportunity to instantly snatch their prey with their agile tongue.