Multiple choice general knowledge

Why do mice gnaw constantly?

  1. because their teeth never stop growing

  2. to get nest material

  3. to sharpen their teeth

  4. to mark its territory

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Like all rodents, mice have incisors that grow continuously throughout their entire lives. If they don't gnaw regularly to wear these teeth down, the incisors would overgrow and curve back into the mouth, preventing the mouse from eating properly and potentially causing starvation. Gnawing is essential for their survival.