Frogs are amphibians popularly known for their jumping style, croaking sounds, bulging eyes and slimy skin. They live all over the world and occupy the first level of amphibians and are among the most diverse animals in the world with more than 6,000 species present.
Red-eyed Tree frog, Blue poison dart frog, Golden poison frog, Amazon milk frog, Tomato Frog, Goliath frog and finally the mimic poison frog are the 7 most important species of frogs found in temperate and wet forests.
Out of these 7 species, the poison dart is the most poisonous frog. The poison dart frog is a member of the Dendrobatidae family, wear some of the most brilliant and beautiful colours on Earth. Depending on individual habitats, which extend from the tropical forests of Costa Rica to Brazil, their colouring can be yellow, gold, copper, red, green, blue, or black. Their elaborate designs and hues are deliberately ostentatious to ward off potential predators, a tactic called aposematic colour
The goliath frog is the largest species in the world. It grows up to 12.5 inches (32 centimetres) long and can weigh up to 7.2 pounds (3.3 kilograms). The goliath frog is as big as some house cats, Although, for its huge size, This species of frog is harmless and are used as pets in Some Houses. According to the most recent estimates, the total population of goliath frogs has dropped by at least 50 per cent over the last 15 years, and the species is now listed as Endangered.
Frogs have been used as research models for many years. Their physiology is relatively simple when compared to mammals, and the study of frog muscles in the 1920s led to the discovery that the neurotransmitter acetylcholine was responsible for relaying nerve impulses signalling movement to the muscles.
Interesting Facts:
- Frogs do not have external ears like us. However, they do have eardrums and an inner ear. The frog ear is called a tympanum and is the circle you see behind a frog’s eye.
- Frogs do not drink as we do; they absorb water directly through their skin in an area known as the ‘drinking patch’ located on their belly and the underside of their thighs.
- Frogs use their eyeballs to swallow. Frogs eat their prey whole and their eyeballs sink into their mouth and push the food down into their throat.
References:
Live Science / Facts About Frogs And Tods
Britannica / Definition, Species, Habitat, Variation
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