External features can be used to group animals.
Can be grouped according to their similarities.
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| http://looking-for-animated-gifs.piczo.com/animals?cr=7&linkvar=000044 |
- Animals with four legs : elephant, cow, dog, cat
- Animals with two legs : chicken, duck, horn bill bird
- Fish, crocodile, snake can be put in the same group because their bodies are covered with scales.
- Crocodile can also be put in the same group as rat, tiger and kangaroo because they have FOUR LEGS.
~Take a Break~
http://www.youtube.com/watch?v=PR3UCF4QGEw
