Facts About Frogs, At A Glance

By Irina Bright.

This article is part of our Environment section

See the complete list of all our Articles about Rainforest Animals here.

Find a summary of some fascinating facts about frogs below.

frog sitting on a branch © Michael Ushakov
  • There are more than 5,000 known species of frogs.
  • The largest diversity of frogs is found in tropical rainforests.
  • Their size ranges from 1cm to 30cm in length.
  • Most of them are semi-aquatic animals, i.e. they live both on land and in water.
  • While in water, frogs can “breathe” with their skin as oxygen passes through it into the blood.
  • While on land, they breathe with their nostrils as the throat puffs out and the air is forced into the lungs.
  • Fertilization in frogs is external: females lay eggs (up to many thousands) which are then fertilized by males.
  • Adult frogs are mostly carnivorous eating such invertebrates as insects, spiders etc.
  • They often use their sticky tongues to catch moving prey.
  • Frogs are considered an “indicator” species that can point to changes in environments for whole ecosystems.

Reference:
Frog. (September 23, 2007). In Wikipedia, The Free Encyclopedia. Retrieved September 24, 2007 from http://en.wikipedia.org/w/index.php?title=Frog&oldid=159713650

Written by:     Irina Bright
Original publication date:     2007
Republication date:     2020