Many animals have relatively large mouths, but the following animals are generally considered to have "big mouths":
1. Sharks: Sharks have very large mouths that can open to a wide angle, and their teeth are also very sharp. Sharks mainly feed on fish, seals, etc.
2. Crocodiles and crocodiles: Crocodiles and crocodiles also have very large mouths that can easily crush their prey. Crocodiles and crocodiles mainly feed on fish, frogs, birds, etc.
3. Birds: Some species of birds also have relatively large mouths, such as pelicans, storks, woodpeckers, etc. They mainly feed on fish, small mammals, insects, etc.
4. Giant mammals: Huge mammals such as elephants, hippos, and rhinos also have huge mouths. They mainly feed on plants, and the size of their mouths is closely related to their feeding habits.
It should be noted that the mouth size and shape of these animals are closely related to their living environment and living habits, and are the result of their adaptation to the environment during their evolution.
