They most likely go to court and if found guilty
they will be sentenced to 5 to 25 yrs. in the slammer!
I believe that would depend on the laws of the county and state where the accuser goes to court. I've seen news stories of people torturing animals and they get off without any jail time and a little bit of community service. I've also seen news stories detailing people who have been sentenced 3-5 years for animal abuse. I do not recall ever seeing anyone sentenced for more that 5 years, but that could be my area (Mid-east USA) and just what is sensational enough to make the daily news.