Frogs – Nature’s Amphibians
• • Exploring Their Features, Life Cycle, and
Importance
• • Presented by: [Your Name]
• • Class: [Your Class]
• • Date: [Date]
Introduction
• • Frogs are amphibians (live both on land and
in water).
• • Belong to the order Anura.
• • Around 7,000 species found worldwide.
• • Present on every continent except
Antarctica.
• • Known for jumping, croaking, and slimy skin.
• • Mostly nocturnal and cold-blooded
(ectothermic).
Physical Characteristics
• • Smooth, moist skin that absorbs water and
oxygen.
• • Large, bulging eyes with excellent night
vision.
• • No tail in adult stage.
• • Long, strong hind legs for leaping and
swimming.
• • Webbed feet help in swimming.
• • Ear openings (tympanum) on sides of the
Great barred frog
Indian bull frog
(Hoplobatrachus tigerinus)
Poison dart frog
African clawed frog
Red-Eyed tree frog
Glass frog
Habitat and Distribution
• • Prefer freshwater habitats: ponds, lakes,
rivers, swamps.
• • Also live in rainforests, grasslands, and
deserts.
• • Arboreal frogs live in trees; burrowing frogs
live underground.
• • Need moisture to keep skin from drying.
• • Sensitive to environmental changes.
• • Concentrated in tropical areas.
Life Cycle (Metamorphosis)
• • 1. Eggs – laid in water in jelly-like clusters.
• • 2. Tadpole – breathes with gills, swims with
tail.
• • 3. Tadpole with legs – develops legs and
lungs.
• • 4. Froglet – tail shortens, lungs fully form.
• • 5. Adult Frog – ready for life on land.
• • Complete metamorphosis over 12–16
weeks.
Diet and Feeding
• • Adults are carnivorous: insects, worms,
spiders, snails.
• • Larger frogs may eat fish, mice, and birds.
• • Use long, sticky tongue to catch prey.
• • Tadpoles are mostly herbivores: algae and
plants.
• • Some species show cannibalism.
• • Food is swallowed whole – no chewing.
Adaptations
• • Webbed feet help in swimming.
• • Camouflaged skin helps hide from predators.
• • Strong legs for jumping and escape.
• • Can breathe through skin, lungs, and mouth
lining.
• • Poisonous skin in some species for defense.
• • Croaking helps attract mates and
communicate.
Role in Ecosystem
• • Control insect populations (like mosquitoes).
• • Food for birds, snakes, fish, mammals.
• • Bioindicators of environmental health.
• • Reflect water and air quality.
• • Help maintain ecological balance.
• • Used in science and medicine.
Threats to Frogs
• • Habitat loss from deforestation and
development.
• • Water pollution from chemicals and
pesticides.
• • Climate change affects breeding and habitat.
• • Diseases like chytridiomycosis (fungal
infection).
• • Invasive species displace native frogs.
• • Over-collection for food, pets, labs.
Conservation Efforts
• • Protecting wetlands and natural habitats.
• • Frog sanctuaries and captive breeding
programs.
• • Environmental awareness and education.
• • Research to fight frog diseases.
• • Avoiding pollutants near water bodies.
• • Protected by IUCN, CITES, and wildlife laws.
Interesting Facts
• • Frogs absorb water through their skin.
• • Some frogs can freeze and survive winters.
• • Glass frogs have transparent skin.
• • Poison dart frogs get toxins from their diet.
• • Frogs use eyes to help swallow food.
• • A group of frogs is called an 'army'.
Conclusion
• • Frogs are key to ecological balance and
biodiversity.
• • Fascinating life cycle and biological features.
• • Declining numbers warn us about
environmental health.
• • We must protect their habitats.
• • Spread awareness to save amphibians.
• • Every small step counts!
THANK YOU
