Is sound of deer called bell?

No, the sound a deer makes is not called a bell. It's called a bark or a grunt.

* Bark: A short, sharp sound made by a deer, especially when alarmed.

* Grunt: A low, guttural sound made by a deer, often used in communication with other deer.

While deer don't make a bell sound, they do have a "tinkle" sound associated with them. This is the sound of their antlers rubbing together, particularly during the rutting season.