TUXTLA GUTIERREZ, Mexico - A Mexican donkey has been freed from jail after doing time for acting like a jackass.Local television today showed "Blacky" gobbling food from a bucket after spending three days in a jail that normally holds people for public drunkenness and other disturbances.Blacky was jailed for biting and kicking two men near a ranch outside Tuxtla Gutierrez, the capital of the southern state of Chiapas.Officials freed the donkey after its owner paid a fine of $US36 ($A38) and the $US115 ($A120) hospital bill of the men, who suffered bites to the chest and a broken ankle. Authorities say he also must pay $US480 ($A500) to each man for missed work days. AP