Published: Aug 27, 2010 4:16 PM EDT
Updated: Aug 27, 2010 1:16 PM EDT

TAMPA, Fla. (AP) - A Pasco County man convicted of shooting bulls with a bow and arrow and using a golf club to blind a baby llama and kill its mother is going back to prison.

A Hillsborough County judge revoked 27-year-old Robert Pettyjohn's probation Thursday. Pettyjohn pleaded guilty in 2002 to shooting bulls in Hillsborough County and attacking pet llamas in Pinellas County. He and another teen had been arrested for the attacks a year earlier. Pettyjohn was released on probation after three years of a 10-year sentence.

Pettyjohn reportedly failed to take a court-ordered drug test in March and was arrested in July.

When the judge asked Pettyjohn Thursday if he could pass a drug test, the man said he could.

Pettyjohn failed the test, and the judge ordered him to serve the remaining seven years of his sentence.