Habitat: Rana tigrina is found in North India. It is the main species of frog. Generally frog is found in ponds, puddles and mud. Although they also come out of the aquatic habitat to land to catch their prey which are mostly insects. Nature:
1. Movement: (a) By jumping and, (b) By swimming. The absence of neck in these helps in swimming in water and jumping on land.
2. Nutrition: Adult frog is carnivorous. Tadpole (frog larva) is herbivorous.
3. Croaking: The male frog croaks very loudly due to which the female frog gets attracted for reproduction.
4. Hibernation: Frogs respire only through skin during hibernation.
5. Summer sleep: (aestivation): During this period the frog remains in shady, cool and rests in moist places and conserves energy.
6. Protective: colour change the ability to change the colour to hide them from their enemies (camouflage). This protective coloration is called mimicry.
7. Reproduction: The male frog jumps and grabs the female frog with its front legs holds tightly to it. Copulatory pads present in the male frog help in catching the female frog. This sexual union or sexual embrace is called pseudocopulation. External fertilisation takes place in these. During embryonic development, a fish- like tailed tadpole is produced which respires with the help of gills and is herbivorous.