Consider the following animals :
Fish, Grasshopper, Cockroach, Earthworm, Frog, Cow, Goat, Man, Lizard, Snake
Which of these animals :
breathe only through lungs ?

Answer

To determine which animals from the given list breathe only through lungs, we can analyze the respiratory systems of each animal:

1. **Fish**: Fish primarily breathe through gills, not lungs.
2. **Grasshopper**: Grasshoppers breathe through a system of tubes called tracheae, not lungs.
3. **Cockroach**: Cockroaches also breathe through tracheae, which are similar to the grasshopper's system, not lungs.
4. **Earthworm**: Earthworms breathe through their skin, not lungs.
5. **Frog**: Frogs have a dual respiratory system; they can breathe through both lungs and their skin, so they do not breathe only through lungs.
6. **Cow**: Cows are mammals and breathe exclusively through lungs.
7. **Goat**: Goats are also mammals and breathe exclusively through lungs.
8. **Man**: Humans breathe exclusively through lungs.
9. **Lizard**: Lizards are reptiles and breathe exclusively through lungs.
10. **Snake**: Snakes are also reptiles and breathe exclusively through lungs.

Now, we can summarize the findings:

- The animals that breathe only through lungs are:
- Cow
- Goat
- Man
- Lizard
- Snake

### Final Answer:
The animals that breathe only through lungs are Cow, Goat, Man, Lizard, and Snake.