an animal is an elephant if and only if it is gigantic

Blue whale? (not if)

Baby elephant? (not only if)

To determine if an animal is an elephant, you can follow these steps:

Step 1: Observe the animal's size.
- If the animal is gigantic, go to Step 2.
- If the animal is not gigantic, it is not an elephant. Stop here.

Step 2: Identify distinctive features of an elephant.
- Look for a long trunk and tusks.
- Observe the animal's ears, which are generally large and fan-shaped.
- Note the animal's overall body shape, which is massive and solid.
- Look for a combination of a grayish-brown skin color and coarse hair.

Step 3: Compare the observed features with those of elephants.
- If the animal possesses most or all of the distinctive features mentioned above, it is likely an elephant.
- If the animal lacks these features, it is not an elephant. Stop here.

By following these steps, you can determine if an animal is an elephant based on its size and distinctive features.

To determine if an animal is an elephant, you need to know if it is gigantic. "Gigantic" is a subjective term, so it's essential to establish the criteria or characteristics that define a gigantic animal. In the case of an elephant, size can be a defining factor. Elephants are the largest land animals, with males weighing approximately 5,000 to 14,000 kilograms (11,000 to 31,000 pounds) and standing about 3 to 4 meters (10 to 13 feet) tall. However, it's important to note that not all gigantic animals are elephants.

Therefore, you can use size as a criterion for determining if an animal is an elephant, but it's not the only characteristic. Elephants also possess distinctive features, such as a long trunk, large ears, and tusks. Additionally, they are mammals and belong to the family Elephantidae.

In conclusion, an animal can be classified as an elephant if it meets the specific criteria of being gigantic, possessing the characteristic features of an elephant, and belonging to the family Elephantidae.