Ear Muscles 

Dogs can move their ears. They use ear muscles. This helps them hear sounds.

Most people cannot move their ears. But we all have ear muscles.  

Photo Credit: Tierfotoagentur/Alamy Stock Photo

Scientists studied ear muscles in people. Scientists played sounds. People listened. They used their ear muscles when they were trying to hear.  

Photo Credit: ia_64/Getty Images

The scientists could tell when people used their ear muscles. They could tell when people were trying to listen. This can help engineers make better hearing aids!

What Do You Think?    How are human and dog ear muscles alike? How are they different?

Photo Credit: FatCamera/Getty Images