Invertebrates or vertebrae’s
Animals
│
├─ Vertebrates (have spine)
│ ├─ Fish
│ ├─ Amphibians
│ ├─ Reptiles
│ ├─ Birds
│ └─ Mammals
│
└─ Invertebrates (no spine)
├─ Insects
├─ Arachnids
├─ Mollusks
├─ Annelids
├─ Cnidarians
└─ Echinoderms
Mammals
Mammals
• Characteristics: • Warm-blooded (maintain a constant body temperature). • Have hair or fur. • Most give birth to live young (except monotremes like the platypus and echidna, which lay eggs). • Produce milk to feed their young. • Examples: Lions, dolphins, humans, bats, elephants. • Interesting Facts: • Bats are the only mammals capable of sustained flight. • Dolphins are extremely intelligent and communicate with clicks and whistles. • Elephants have strong family bonds and exceptional memory.
Birds
Birds
Characteristics:
• Warm-blooded.
• Have feathers, wings, and beaks.
• Lay eggs.
• Most can fly, but some (like ostriches and penguins) cannot.
• Examples: Eagles, parrots, penguins, hummingbirds.
• Interesting Facts:
• Hummingbirds can hover in mid-air and beat their wings up to 80 times per second.
• Penguins are excellent swimmers adapted to cold water environments.
• Some birds, like crows and parrots, are highly intelligent and can use tools.
Reptiles
Reptiles
• Characteristics:
• Cold-blooded (body temperature depends on the environment).
• Covered in scales or scutes.
• Lay eggs on land.
• Examples: Snakes, lizards, turtles, crocodiles.
• Interesting Facts:
• Some lizards can detach their tails to escape predators.
• Crocodiles have one of the strongest bites in the animal kingdom.
• Turtles can live for decades, with some species exceeding 100 years.
Amphibians
Amphibians
• Characteristics:
• Cold-blooded.
• Usually start life in water with gills, then develop lungs to live on land.
• Moist skin that helps with respiration.
• Examples: Frogs, salamanders, caecilians.
• Interesting Facts:
• Frogs can absorb water and oxygen through their skin.
• Many amphibians are indicators of environmental health because they are sensitive to pollution.
• Some salamanders can regenerate entire limbs.
Fish
Fish
• Characteristics:
• Cold-blooded.
• Live in water, breathe using gills.
• Have fins for swimming and scales covering their bodies.
• Examples: Salmon, sharks, clownfish, anglerfish.
• Interesting Facts:
• Some fish, like salmon, migrate thousands of miles to spawn.
• Sharks have been around for over 400 million years.
• Certain deep-sea fish have bioluminescent organs to attract prey or mates.
Insects
Insects
• Characteristics:
• Exoskeleton (hard outer shell).
• Three pairs of legs.
• Usually have wings.
• Undergo metamorphosis (egg → larva → pupa → adult).
• Examples: Butterflies, ants, bees, beetles.
• Interesting Facts:
• Bees communicate through dances to share food locations.
• Ant colonies have complex social structures and division of labor.
• Some insects, like cicadas, can live underground for years before emerging.
Arachnids
Arachnids
• Characteristics:
• Eight legs.
• No antennae.
• Many are predators.
• Examples: Spiders, scorpions, ticks, mites.
• Interesting Facts:
• Spiders produce silk, which is stronger than steel by weight.
• Scorpions glow under ultraviolet light.
• Some ticks are carriers of diseases, showing how arachnids can impact humans.