Okay, there is a letter writting campaign already in place.
http://www.aldf.org/actionline/details.php?id=184
Here are the suggested people to write-
To thank the prosecution and encourage a strong sentence upon conviction (including jail time, psychological counseling and a prohibition from having future contact with any animals), send letters to Mr. Johnson and Judge Watkins at the addresses below.
Victor S. Johnson III, District Attorney General
20th Judicial District, Davidson County
Washington Square, Suite 500
222 2nd Avenue North
Nashville, TN 37201-1649
The Honorable Monte Watkins
Criminal Court, Division 5
Justice A. A. Birch Building
208 2nd Ave. North
Nashville, TN 37201
Please refer to case #2004-C-2418