Baby Animals Who Do NOT Look Like Their Parents Year 2 Science Unit Good to Grow Lesson 4 Frogs and Toads Most baby animals in the natural world look like their parents when they are born. Some do not. One good example of this is a toad or frog. Australias Native Amphibians Frogs are vertebrates (animals with backbones) and are amphibians. All Amphibians: • Have a three-chambered heart. • Breathe through their skin as well as their lungs. • Spend part (or all) of their life as a larval stage living in freshwater • Can survive for a period of time living in water or on land Shelter Shelter in daytime during breeding periods. This may be in hollows, cracks and crevices in rocks and logs, under leaf litter, in sand or gravel, or on the undersides of shady leaves Safe Hiding Place During non-breeding times and during droughts Some frogs burrow into leaf litter, soil or sand; others live in cracks, crevices and hollows in trees, logs and rocks. Some use camouflage – can you find this frog? Food Many frogs eat insects, spiders and other small invertebrates. Large frogs may eat small lizards, mice or small birds. Some may eat other frogs. While they are young, tadpoles usually eat algae and other aquatic plant matter. Water for Breeding • Most frog species have particular water requirements. • Some tadpoles need shallow water, others deep water. • Some prefer still water and some running water. • Eggs may need to be attached to plants. • Eggs of some species float on the water in a kind of foam or froth. • There has to be sufficient water present long enough for tadpoles to complete their development. Frogs Need a Home Some frogs burrow into leaf litter, soil or sand. Others live in cracks, crevices and hollows in trees, logs and rocks. Other Animals Who Do Not Look Like Their Parents at Birth Other animals and insects who do not look like their parents when they are born include: • Flies • Ladybugs • Kangaroos and wallabies Joeys Kangaroos, wallabies spend the first 6 months of their lives developing from an embryo into an infant. They start their lives looking very different from their parents.