If you see it, hear it, smell it and just overall have that gut feeling report it.
Report to proper authorities. Local animal control, humane society, police, etc.
Document everything. Time, place, what occurred, reacurrent instances, etc.
Avoid taking individual action. Things could go awry and get dangerous very quickly.
No flash mobs. If you do not know the situation in its entirety dont excite the neighborhood into condemning that person.
Have witnesses. Have written statements. Avoid verbal which can always be turned around into hearsay.
Be prepared to be interviewed and possibly go to court to testify as a witness.
Educate people about what animal abuse and neglect it.
Never be afraid to do what is right.
