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Breeding Cycle of the Common Frog


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Frog Feb 03

Frogs will be seen gathering in ponds between January and March each year where they will spawn.

In about their fifth spring Frogs will go back to the water to breed.

The males grow horny pads on their front feet to help them grip the females.

The male will grip the female from the back and swim together for a number of days when the female will lay between 1,000 and 3,000
eggs which the male will fertilize.

The eggs are massed together in shallow, still water, the jelly around the eggs swells to about 6 mm in diameter. Frog Feb 03

The eggs quickly develop and produce Tadpoles after 2 or 3 weeks, with tail and external gills.

The external gills are absorbed after about 4 weeks.

At 7 weeks hind legs appear.

The front legs develop in side the skin.

At 12 weeks the tale is absorbed, the front legs appear and the lungs are used.

The development of the tadpoles will depend on temperature and availability of food.

Quote;Sometimes Tadpoles will hibernate over winter. Ref; Plants and Animals by Jan Tomam and Jiřί Felix, Octopus books 1974.