Police in Risca are appealing for information following stables and a shed being broken into on Heol Gerrig.
The theft occurred some time between 5.30pm on July 14 and 9.20am on July 15.
A large green and white box was stolen containing veterinary drugs and needles.
The drugs are marked as DECTOMAX, DEPOCILLIN AND PENSTREP. They are in liquid form and in 150ml bottles. These are all strong and potentially very dangerous to humans.
Anyone with information relating to this should call 101 or Crimestoppers on 0800 555 111 quoting log 156 15/07/13.