Not every station has dogs, and dogs are trained for detection of humans and narcotics, not for attack. They can be a heavy responsibility since you will assume all kenneling responsibilities. From time to time, the Border Patrol seeks trainee pilots or journeyman pilots. However, you must first be a Border Patrol Agent. There are no outside hires for Border Patrol pilots.
Pilots get special pay and grade accommodations for the dangerous duties they perform.
Often this depends on the nature and the frequency of the crime. Many times a small misdemeanor offense will not prevent you from serving in federal government service. However, failure to disclose information on your background investigation will definitely prevent you from serving. You will be better served by making everything known before the background investigators find problems on their own. Problems with bad credit and other possible difficulties in your background should also be disclosed.