Frog simple drawing pictures
How to draw a simple frog
Frog Amphibians belonging to the Phylum Chordata, Class Amphibians, Order Anura, and Ranaidae. Adults have no tails. Eggs are laid in water, fertilized outside the body, hatch into tadpoles, and use gills to breathe. After mutation, adults mainly use lungs to breathe and also use skin to breathe. . Most frogs reproduce through in vitro fertilization, with fertilized eggs hatching into tadpoles outside the mothers body. Only 10 to 12 species of frogs in the world have evolved to undergo internal fertilization, and some will expel fertilized eggs from the body to hatch into tadpoles. But in zoology, frogs specifically refer to the black-spotted sidefold frog. Frogs have always been considered oviparous, but scientists have discovered that a frog that lives in the rainforest of Sulawesi, Indonesia, can lay tadpoles. This frog is the only one among more than 6,000 species of frogs in the world that can "lay tadpoles". Frogs are slender and mostly good at swimming. The neck is inconspicuous and has no ribs. The ulna and radius of the forelimb are healed, and the tibia and fibula of the hindlimb are healed. Therefore, the claws cannot rotate flexibly, but the muscles of the limbs are well developed. The most primitive frogs began to evolve in the early Triassic. The earliest jumping frogs today appeared in the Jurassic. Because frogs feed on insects and other invertebrates, they must live near water. There are about 130 species of frogs in China, and almost all of them are experts at destroying pests in forests and farmland.
