What are the similarities and differences between the snake and the viper?

Similarities: The snake and the viper are both snakes. They have fangs. Both are blackish in color.

Differences:
Only the viper secretes dangerous poison, unlike the snake.
Snakes have “yellow ears”, many vipers have a zigzag strip along the back
The viper feeds on mice, and only on frogs.
The snake’s head is oval, slightly ovoid, and the viper’s head is triangular.
Already lives in swampy areas, and a viper in wooded areas.



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