The frog great importance in the ecologic system locomotion by jumping lives everywhere, except at Antarctica short and compact body, big eyes sidewise, long hind legs

Table of contents Progression Catching prey In winter and summer Enemies Locomotion

Progression of the frog ( Metamorphosis ) spawn of frogs - about 2500 eggs in a cluster - each egg is situated in a (gelatinous) wrapping - this wrapping protects and provides food at the beginning tadpole - hatch out after 10 days - about 6mm long - breathing by gill-tufts - helmtail for locomotion gill-tuft helmtail

tadpoles with legs at the front and the back - about 4 weeks old - gill-tufts degenerate - inner gills appear - first hind legs grow, then forelegs - helmtail degenerates - food: algae and water plants completely developed frogs - leaves water after 12 weeks of evolution - breathing through airbags - food: insects, amphibians, small fish - length: 5-10 cm - Goliathfrogs up to 60 cm long and 4 kg

How to spend the winter: - in mud - in soil - in abandoned constructions of other animals How to spend the summer: - in sand or clay (e.g. Australia) frogs are hematocryal

Locomotion no tail nearly no neck foreleg small and stron hind leg long, muskulös flashs sceletton is build in a manner to provide good swimming and jumping skills

Enemies Catch of prey - sticky tounge is fastened at the front of the jaw - when spotting a prey it opens ist mouth - tongue unrolls and comes out relatively uncontrolled It has no teeth! mammals snakes water birds storks cars