Hopefully it would include species, manufacturer, withdrawal and whether for treatment, control, prevention or growth promotant/feed efficiency - although that info would usually be on the label.
DailyMed.nlm.nih.gov includes veterinary drugs and the full SPLs available via web and XML API.
For example: http://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=96f180f3-2164-4fce-a056-cd5d6b812ab8
See related questions:
