Would it be so bad to let my dog have balls?

This in the email today:

Dear  BEEZLE,

How are you? We just wanted to remind you that

you are due for your following:

11/11/2011             CASTRATION CAN. UNDER 50 LBS.

11/11/2011             MICROCHIP w/Dr service & registration

Please tell your owners to call us for an appointment soon!

Your friends at the Veterinary Hospital

Beezle did not pass on the message.  He is considering leaving town.  Since I am leaving town that weekend, I am considering letting him pass on his erm, checkup.


Would it be so bad to let my dog have balls?  They are small and very furry.