I had a question regarding a Numeric field type.

We have been creating various numeric fields with various lengths.  One numeric field is 2 digits with 0 digits after the decimal.  When users enter data into this field, it allows them to enter more than 2 digits, but they get an error when they try to save the record.  I confirmed this with any numeric field.  

I would have expected that if a numeric field is a specific length, users would not be able to type in more than the specified length.  This is how text fields work.

Is this standard behavior?