Frog skin has

Answer 1

Frogs and toads have a 'Lycra' type skin that protects them from from injury and disease. It comes in wonderful variations of color and patterns.

Frog skin is water permeable, this means it can let water in and out. Frogs don't often drink with their mouths, they absorb water through their skin. They have a 'seat pouch', an area on their bellies which is designed for water absorption. They absorb through capillary action from water or a moist surface.

In many species glands are modified to produce toxins and other substances that will repel predators. Some frog skin toxins are being researched as potential pain medications.

Frogs have a huge variety of skin colors and patterns. Colors can help warn predators that the frog may be poisonous. And many frogs change the color of their skin to change their heat absorption rate so controlling their temperature. Also water and other secretions help sustain temperature.

Answer 2

Frogs contain blood capillaries to help them perform gas exchange through their skin.

Further information:

Frogs' skin contains mucus glands, which secrete the mucus that helps to keep the frog moist when it is not in water.

It has been known for some time that frogs also have poison glands in their skin but that, in most species, these toxins cause little or no harm to other species. The poison dart frogs are an exception to this. The poison glands in their skin are different from the parotoid gland found only on toads.

New research indicates that the skin of frogs also contains substances which could become the basis for powerful antibiotics. So far, scientists have identified 100 antibiotic substances in the skins of various frog species from around the world.